Topographic Objects Research Articles

CadastreVision: A benchmark dataset for cadastral boundary delineation from multi-resolution earth observation images

Approximately 70%–75% of people worldwide have no formally registered land rights. Fit-For-Purpose Land Administration was introduced to address this problem and focuses on delineating visible cadastral boundaries from earth observation imagery. Recent studies have shown the potential of deep learning models to extract these visible cadastral boundaries automatically. However, studies are limited by the small size and geographical coverage of available datasets and by the lack of information about which cadastral boundaries are visible, i.e., associated with a physical object boundary. To overcome these problems, we present CadastreVision, a benchmark dataset containing cadastral reference data and corresponding multi-resolution earth observation imagery from The Netherlands, with a spatial resolution ranging from 0.1 m to 10 m. The ratio between visible and non-visible cadastral boundaries is essential to evaluate the potential automation level in cadastral boundary extraction from earth observation images and interpret results obtained by deep learning models. We investigate this ratio using a novel analysis pipeline that overlays cadastral reference data with visible topographic object boundaries. Our results show that approximately 72% of the total length of cadastral boundaries in The Netherlands are visible. CadastreVision will enable new developments in cadastral boundary delineation and future endeavours to investigate knowledge transfer to data-scarce areas. Our data and code is available at https://github.com/jeroengrift/cadastrevision.

What is the actual composition of specific land cover? An evaluation of the accuracy at a national scale – Remote sensing in comparison to topographic land cover

Satellite imagery allows us to capture and collect land cover information for increasingly large areas. This allows us to represent current land cover on maps in a simple and standardized way; however, any land cover determined in this way is subject to some algorithmic uncertainty. This paper aims, for the first time, to indicate the magnitude of this uncertainty through the empirical probability distribution of a given land cover at a given location. By analyzing 3 data sources, i.e. the Corine Land Cover map, the POLSA land cover map and the classic map - the BDOT10k database of topographic objects. Empirical distributions of the occurrence of land cover class data in areas with a given land use on a topographic map were determined. The work was carried out on a large scale, i.e. on the maximum possible sample for Poland, i.e. on the area of the whole country. This makes it possible to introduce and quantify uncertainties. Spatial analyses were carried out using satellite-based methods to determine land cover or using a topographic map. This work and its results will be useful to all users who want to assess the occurrence of a phenomenon in a given area, taking into account the uncertainty of the land cover, and thus obtain more accurate and reliable results. It also provides, for the first time, a methodology for verifying such map correspondences, which can be replicated in work by other researchers, using the confusion matrix and as evaluation metrics the true positive rate (TPR) and weighted accuracy have been adopted. The paper proposes a link between land cover classes in all databases. It was shown that the TPR for BDOT10k was higher than 50% only with CLC Level 1 (72.0%) and POLSA Land Cover (61%), while the TPR for RS classes for each remote sensing data was always higher than 60% with BDOT10k. The class with the highest remote sensing classes was related to water, especially marine (92.0% for POLSA and 85.3% for CLC level 3), arable land (98% for POLSA, lowest for CLC level 3 (80%), and forests (coniferous POLSA – 89%, CLC level 1 and 2–85%), while low values were obtained for wetlands, peatbogs. The authors do not state which land cover approach is better, as each may have multiple uses, but the values presented in this work must raise awareness of uncertainties in land cover and critical implementation in decision-making processes for multiple areas of human activity. The study provides ready-to-use values of the probability of a given land cover class being present on a topographic map, given that remote sensing has classified it as such. These functions can also be used in reverse, to determine the probability of a given land cover class being present in remote sensing, given that a specific class has been identified on a topographic map. The results of the consistency assessment, with the composition structure, can be used by a wide range of users, including public administration, land managers, land architects, public services, academia and individuals.

Dasymetric Population Mapping Using Building Data

The goal of this research was a quantitative-spatial high-resolution analysis of population distribution based on residential building data extracted from topographic objects database. Attribute information on residential buildings (location, volume, function) provides opportunities to estimate the number of residents. The recalculation of the population from the urban units of Cracow into new spatial units was based on the area-weighted aggregation method. The location of residential buildings constituted a limiting variable, and the total square meterage (calculated as the area of the buildings and the number of their floors) constituted the binding variable. The introduction of additional binding variables related to the type of building and its location, as well as various methods of determining the square meterage per building type, resulted in the creation of a total of nineteen maps of population. As a result, the best methods for the correct geographic scale and segmentation of residential building type—single family or multifamily—were identified. For the input data, based solely on the amount of population in urban units, the calculated value of the mean absolute percentage error (MAPE) in the 1 × 1 km grid was 310.8 percent, and for the root mean square error (RMSE) was 1,476 people. In the dasymetric method, directly associating the population with the volume of residential buildings, the errors fell to 21.9 percent and 632 people, respectively. The best result was obtained for the variant based on minimizing the RMSE, associating the number of residents to single-family buildings (2.88 people/building) and associating the number of residents to the square footage in multifamily buildings (37.1 m2/person; MAPE = 19.2 percent, RMSE = 556 people).

Soil sealing changes in selected functional urban areas in Poland in 2012–2018

Soil sealing is a threat to soil and its ecosystem services. One of the main drivers of soil sealing is land degradation resulting from the expansion of urban areas, where it leads to such problems as the growing risk of flooding and local inundations, urban heat islands, or water shortages. The article focuses on analyses and quantification of the general degree of soil sealing in 2012–2018 in eight functional urban areas (FUA) in Poland, taking into account their division into the urban core (UC) and the commuting zone (CZ). We used the high resolution layer imperviousness density (HRL IMD) data to quantify soil sealing as well as data on land cover and land use with different spatial resolutions, i.e. from the European Urban Atlas project (UA) and the National Database of Topographic Objects (BDOT10k) to quantify artificial surfaces. The research determined the spatial differentiation of UCs and CZs in terms of the degree of soil sealing. We further observed higher average growth of sealed land in CZs. Quantitative and spatial analyses determined the spatial patterns of soil sealing in the FUA in Poland. Soil sealing intensified from 2012 to 2018. The process should be expected to continue in the coming years in light of the continuous transformation of vegetated areas into artificial ones. The conclusions should be considered valuable for the implementation of the spatial policy concerning sustainable land use and soil protection in suburban areas.

Study on transformations in land use in the functional context of extensive city ventilation routes using the example of Bródnowski Ventilation Corridor in Warsaw, Poland

Abstract Ventilation corridors are critical for regulating the appropriate flow of urban air streams. Details on how they function, especially in a specific location, can be found in local eco-physiographic studies. Such analyses are designed during conceptual work on the conditions and directions of the development of a studied area. Such documentation includes advanced research on the impact of natural conditions on the area's growth and evolution. In Warsaw, Poland, such a study makes it possible to define various natural areas that are essential for the appropriate functioning of the city and increase its inhabitants’ well-being. This provides an initial basis for further analysis and motivates researchers to investigate the distribution of natural sites. It inspired the authors to assess the land-use structure in the context of the location of ventilation corridors. Thus, land use and land cover (LULC) modifications were examined in the context of their tendency to aid in the ventilation of the city. The object of the study is the Bródnowski Ventilation Corridor (BVC) – one of several designated for Warsaw in the spatial planning concepts of the 1980s and 1990s. In the research encompassing the years 1982–2020, the authors analysed the land use and roughness determined by the development characteristics and vegetation cover. References were made to current and archival planning documents, aerial photographs, satellite images, and the Topographic Objects Database BDOT10k. The research was prompted by the municipality's intention to urbanize the study area, which will undoubtedly eliminate the ventilation function of the southern part of the corridor and significantly reduce its remaining territory. Analysis of changes in the land cover of the south part of the corridor confirms its marginal importance for the city's ventilation. In this area, ongoing modifications proceed slowly, and urbanization – mainly low-rise and less intensive buildings – is limited. This zone has largely retained and is likely to maintain its favourable features from the point of view of ventilation and air regeneration.

Changes in intra-city transport accessibility accompanying the occurrence of an urban flood

Flooding of the urban transport systems is becoming ever more common, and their ability to function under such conditions requires detailed research. The main objective of this study was to determine the changes (mainly in their spatial nature) of intra-urban transport accessibility of a large city (Lodz) when impacted by urban flooding. The study utilised a variety of data, including the Digital Terrain Model, the Topographic Object Database and the Road Transport Speed Model. These were employed to determine those areas where disruption to the transport system may occur under varying degrees of rainfall (15-minute rainfall with a 20% probability of occurrence and maximum daily totals – an empirical probability of approximately 1.4%). Next, the changes in potential accessibility due to the occurrence of flooding were determined for different scenarios (various depths of flood water). In order to identify the absolute and relative changes in potential accessibility following a flood in the different scenarios, its value in a “normal” situation had to be calculated for all journey lengths in question. The study revealed that there is no correlation between the location of flooded sections of the network and the spatial differentiation of drops in travel times (analysed topologically) or declines in potential accessibility (irrespective of how attractive the destination is).

Historical Topography of Tsarevokokshaysk

The article deals with analysis of the historical topography of Tsarevokokshaysk on the basis of cartographic, written and archaeological sources. The most informative cartographic source on the historical topography of Tsarevokokshaysk is the city plan of 1795, which depicts the main elements of the urban landscape. Written sources provide the most detailed descriptions of the city in 1728, 1795 and 1837. The results of archaeological research of the historical center of Yoshkar-Ola significantly refine and supplement the data of archival sources, allowing us to localize historical and topographic objects on the modern map of the city. The author describes the objects of the urban planning of Tsarevokokshaysk, starting with its central part – the Kremlin, then the prison and Zaostrozhnaya territory. The description includes information from archival sources supported by archaeological research data. In conclusion, the author characterizes the change in the main features of the urban layout of Tsarevokokshaysk during the period from the founding of the city to the beginning of the 20th century, raises controversial issues of the historical topography of Tsarevokokshaysk and concludes that further archaeological research of the historical center of Yoshkar-Ola is necessary.

Специфика номинаций географических объектов как отражение общенационального и регионального компонентов

The political, economic, social and cultural changes that occur in the society affect the processes of nominating urban objects, which represent a fundamental part of toponymic policy. It therefore seems relevant to compare the basics of nominating processes underlying the hodonyms, which are understood as proper names that nominate linear or separately standing elements of a street and road network located on the territory of any type of settlement. The article deals with the hodonyms of Volgograd and Krasnoyarsk. As a result of the comparative study, it has been established that whilst nominating intra-city topographical objects of the abovementioned settlements, the most relevant were memorative and locative linguistic codes, through which the history of the area, country and world is characterized in the hodonymic space of the regions, while symbolic, ethnic and numeric linguistic codes are not decisive for the choice of urban objects' names. It has been proved that linguistic coding takes into account national trends in the development of globalization and glocalization processes and regional specifics, which clarify the geographical location of a settlement, the national composition of the population, their customs and traditions. The article identifies some factors that hinder the implementation of toponymic policy, the most significant of which are the low degree of novelty of the name within the city; the presence of hodonyms, one of the components of which is correlated with another geographical term, the occurrence of separate multi-component nominations.

Декомпозиция ретроспективных топографических карт для послойной оценки типов регионального природопользования

On the example of the most developed part of the lake Baikal basin, the decomposition of the digital coverage content from 12 sheets of the topographic map scale 1:84 000, compiled by the Corps of Military Topographers in 1896-1912, was performed. As a result of vectorization of retrospective layers of topographic objects and subsequent transformation of their shp files into classes of spatial objects of the ArcGIS environment, two cartographic sets of spatial object classes were formed that characterize two types of regional environmental management - traditional pastoral and invasive agricultural. As a result of layer-by-layer geoinformation modeling of cartographic sets on a modern topographic basis and a digital relief model, primary areas of settlement and economic use of the territory were established, physical and geographical characteristics of the past economic use of the territory were determined, and separate mapping of spatial and temporal life support structures of different types of nature management was performed. For operational digital visualization, a technological solution is proposed for storing and mapping sets of spatial object classes by organizing a file-based geodata of the ArcGIS information environment. Cartographic reconstructions of pastoral and agricultural nature management at the beginning of the 20th century are presented, as well as a general cartographic reconstruction of nature management on a landscape basis, which allows us to assert that traditional pastoral nature management does not involve the transformation of the Earth's surface and is characterized by continuous restorative dynamics of natural landscapes, and invasive nature management is based on the violation of soil cover, which later led to the emergence of areas of water and wind erosion.

Tasks and challenges of the Head Office of Geodesy and Cartography in the area of developing topographic maps in 1:25,000 scale

Abstract. In accordance with the legal regulations in force in Poland in the field of cartography, i.e. the Geodetic and Cartographic Law, one of the tasks of the Chief National Surveyor is to create and provide access to topographic, general geographic, thematic and special maps. Moreover, the topographic maps are developed in close cooperation with the Minister of National Defense. The basis for the development of topographic maps is, in particular, the Topographic Objects Database BDOT10k with the topographic objects’ level of details corresponding to 1:10,000 scale, the National Register of Geographic Names and the Digital Terrain Model.Considering the above, in 2022, the Head Office of Geodesy and Cartography, as part of its own work, launched a pilot project aimed at developing tools to automatically generate topographic maps in 1:10,000 and 1:25,000 scale. At a current stage, as part of the II iteration, the maps do not yet constitute full-fledged topographic maps, but we are striving for such a goal. The tools are constantly developed and corrections are made to eliminate errors that still occur. The maps in 1:10,000 and 1:25,000 scales, developed so far under this project in a fully automatic manner, are available free of charge to all interested users on the www.geoportal.gov.pl website.In the article, the results of the developed tools and generated topographic maps 1:25,000 will be presented, as well as the problems faced both in the context of the methodology and the limitations resulting from the software used.

Zmiany powierzchni leśnych na terenie Parku Krajobrazowego Puszcza Zielonka w ostatnich 180 latach w aspekcie krajobrazowym

The article presents the results of research on changes in forest areas in the PuszczaZielonka Landscape Park. An analysis of forest area transformations was carried out with the use of landscape metrics. Archival cartographic material in the form of topographic maps in the scale of 1 : 25 000, coming from four different periods (1830, 1890, 1940 and 1979/80) and a generalized Database of Topographic Object (BDOT) dated 2010, were used for the research. The result of the research are quantitative and qualitative characteristics of changes in the area and the spatial layout of the forest areas and a model of landscape processes taking place in the Puszcza Zielonka Landscape Park. The first analyzed period (1830–1890) was characterized by a small regression of forest area (index of changes WD = ‒0.05), whereas fragmentation and dissection of forest patches prevailed. The second period (1890–1940), despite the slight increase in forest areas (WD = +0.03), was characterized by a decrease in the number of patches and a reduction of their borders’ length. In the third period (1940-1979), the landscape increment process (WD = +0.27), mainly related to the filling of non-forested areas within forest complexes, prevailed. After 1979, the direction of changes was similar but on a much smaller scale (WD = +0.04).

Verification of the consistency of surface water spatial databases and their importance for water management in Poland

Study regionThe research was carried out in 38 rivers in the Oder and Vistula basins. They are located in various parts of Poland, which are geologically, geomorphologically and anthropogenically diversified. Study focusThe paper deals with the inconsistency and incorrectness of applied spatial data in water management. This is caused due to the lack of a unified method of creation and different data sources. The analysis covered three databases used in Polish water management: the digital Map of the Polish Hydrographic Division (MPHP), the Database of Topographic Objects (BDOT) and the Drainage System Database (EM). The Geographic Information Systems and statistical methods (Pearson’s, Kendall’s and Spearman’s coefficients) were used to study the occurrence and size of discrepancies in Polish databases of surface waters. New hydrological insights for the regionThe study showed that in the analysed databases there are discrepancies in the nomenclature (47% cases) and watercourse lengths (geometric and attribute – 97% cases). The examined databases differ in the course and mileage of the same watercourse. The research results showed high consistency of BDOT and MPHP and the highest values of discrepancies when compared with EM. A significant statistical dependence of these discrepancies on land cover with dense vegetation was also found. The research proves that it is important to be careful about the certainty of using these data and shows how this can negatively influence water management system effectiveness.

Dostępność przestrzenna wybranych usług wokół łódzkich stadionów piłkarskich w oparciu o ideę miasta 15-minutowego

One of the main problems and challenges of today’s cities is to reduce individual motorised transport and ensure good pedestrian accessibility. New urban concepts, such as the 15-minute city concept related to the spatial accessibility of services around people’s places of residence, are an attempt to respond to those challenges. The purpose of the article is to assess the spatial accessibility of selected services around two football stadiums in Łódź. In the article, the main assumptions of the 15-minute city concept were transferred from the point of view of a city resident to that of a tourist and a football fan. Indeed, modern stadiums are meeting venues for sports, cultural and business events, and sports tourism is an increasingly popular type of tourist activity. The accessibility areas of the stadiums were determined using the analysis tool in ArcGIS Online, while the service data were obtained from the Database of Topographic Objects (BDOT10k). Final accessibility of services was determined using a cumulative method. The accessibility areas of the two stadiums differ in shape, size and service facilities. The main spatial determinants of these areas are railroad tracks and major transport arteries. The area designated around the LKS stadium is larger and more accessible in terms of selected services, whereas the Widzew stadium has poorer access to all services.

Spatial Multi-Criteria Analysis of Water-Covered Areas: District City of Katowice—Case Study

The following databases contains information on land use with water in Poland: Corine Land Cover (CLC), the Urban Atlas (UA); Database of Topographic Objects (BDOT) the digital Map of Poland’s Hydrographic Division (MPHP); and the Register of Lands and Buildings (EGiB). All these data are referenced in scientific analyses and the Polish water management system, so the results of their processing should be the same (or at least similar); if not, output materials will be inconsistent and unreliable. In the Katowice sample, we checked the quality of this data using multi-criteria analyses, which is based on a grid of equal-area hexagons. Additionally, we applied the Normalized Difference Water Index to check real-time water presence. We detected discrepancies between all the data. The CLC does not reference any flowing water in Katowice. Most data overlapped between MPHP and BDOT, and both databases were similar to UA. However, a lot of uncertainty was also observed in the EGiB, which is considered to be the most accurate of the databases surveyed. In conclusion, we argue that water land cover data should be used with caution, and depending on the scales of analysis, that most actual data could be remote sensed data. We also include a diagram which can be useful in the data selection process.

PROBLEMATYKA GROMADZENIA, PRZETWARZANIA I UDOSTĘPNIANIA DANYCH GEOPRZESTRZENNYCH

Aim of the study: The paper describes the problems of collecting, processing and sharing geospatial data on the example of the National Geodetic and Cartographic Resource (GUGiK). The Central Office of Geodesy and Cartography (GUGiK), on the basis of the acquired data, prepares spatial databases for the whole country, such as the database of topographic objects (BDOT) or the numerical terrain model. These data are used for further studies, environmental analyses such as hydrographic or sozological maps of Poland. Material and methods: The article indicates what functionalities and, above all, what geospatial data are collected in the geoportal, a government map service managed by the General Office of Geodesy and Cartography. The study included a survey of the geoportal. The purpose of the survey was to obtain information on whether this service is known to potential audiences seeking information on spatial data. Results and conclusions: The survey proved that the geoportal is a popular service used to display and process spatial data. Survey respondents use a lot of the data collected in the geoportal and take advantage of its functionality. Finally, an analysis was carried out of data obtained from the District Geodetic and Cartographic Documentation Center of Małopolska regarding the number of notifications of geodetic works, the number of applications for access to materials from the PZGiK, and the number of applications for extracts or extracts from the cadastral record - for the period 2014-2019.

Nationalist Memory Narratives and the Politics of History in Ukraine since the 1990s

Abstract This essay focuses on analyzing the history of the evolution of the nationalist memory narrative in recent memory politics in Ukraine. It observes the political rehabilitation of the radical nationalist movement and its leaders and organizations, followed by public recognition and glorification, and the evolution of this memory narrative since the beginning of the 1990s from local memory to the centerpiece of the state politics of memory. This article examines the memorialization and commemoration of the nationalist movement at regional and national levels (sites of memory, memorial dates, renaming of topographical objects, movies, TV series, etc.), policies aimed at the promotion of the nationalist historical myth, political controversies, roles of major actors, public debates on these issues, societal responses, and international disputes.

Machine Learning of Usable Area of Gable-Roof Residential Buildings Based on Topographic Data

In real estate appraisal, especially of residential buildings, one of the primary evaluation parameters is the property’s usable area. When determining the property price, Polish appraisers use data from comparable transactions included in the Real Estate Price Register (REPR), which is highly incomplete, especially regarding properties’ usable areas. This incompleteness renders the identification of comparable transactions challenging and may lead to incorrect prediction of the property price. We address this challenge by applying machine learning methods to estimate the usable area of buildings with gable roofs based only on their topographic data, which is widely available in Poland in the Database of Topographic Objects (BDOT10k) of Light Detection and Ranging (LiDAR) origin. We show that three features are enough to make accurate predictions of the usable area: the covered area, the building’s height, and the number of stories optionally. A neural network trained on buildings from architectural bureaus reached a 4% median percentage error on the same source and 15% on the real buildings from the city of Koszalin, Poland. Therefore, the proposed method can be applied by appraisers to estimate the usable area of buildings with known transaction prices and solve the problem of finding comparable properties for appraisal.

Urban green resilience: Experience from post-industrial cities in Poland

De-industrialisation triggered economic, spatial and environmental changes in cities. Therefore, this study identifies whether there has been a reorientation of spatial development in post-industrial cities towards the creation of green spaces. The aim of the study is to analyse and evaluate the transformation of green spaces in 32 major cities in Poland, including 12 post-industrial cities. Data sources were vector land cover data models from the Urban Atlas for 2006 and 2018, administrative boundaries from the National Boundary Register and building layers from the Topographic Objects Database. The research procedure was carried out using the GIS environment, through spatial analysis, geoprocessing algorithms, and spatial statistics. The results have shown that post-industrial cities do not develop their urban resilience based on the expansion of green spaces and, consequently, do not build green urban resilience. In addition, the research has proven that the greatest loss of green spaces is noticeable in parts of post-industrial cities with medium and high development intensity, where there is an intensification of construction activity. The dominant direction of the transformation of green spaces has been the conversion of agricultural areas into green spaces (87.79%). In contrast, the main direction of loss in green space has been the creation of new industrial units (24.80%) and the expansion of the urban fabric (23.53%). The article is original due to the fact that there is a gap in the literature regarding the study of green spaces in post-industrial cities with regard to the concept of green urban resilience.

Onomastic Space of Ekaterinburg: Level-Based Markers of Regional Identity

The paper examines the onomastic space of the city of Ekaterinburg containing regional linguocultural information through the lens of a three-level model of onymic identity markers as “part of the collective regional identity manifested in general language and speech activity” (Marina V. Golomidova). This space is formed by a set of urban proper names with different scope of reference — from the astyonym naming the city, through urbanonyms naming districts, streets, and other urban topographical objects, to advertising names in the broad sense of the word. On the first level, the authors describe the stages of the city’s renaming (Ekaterinburg / Sverdlovsk), analyze colloquial stylistic variants of the astyonym, identify figurative appellations motivated by the modern socio-political situation. The class of urbanonyms, markers of the second level of regional identity, includes the names of streets, squares, parks, alleys, boulevards, districts, metro stations, individual buildings, as well as names of residential complexes. Amongst this variety, several naming themes related to the regional features of Ekaterinburg were identified and analyzed. The third level of regional identity markers is a group of advertising names regarded as any product name in the broadest sense of the word: these are the names of commercial enterprises (ergonyms), names of mass media (hemeronyms), names of festivals, competitions, concerts (georthonyms), names vehicles (poreonyms). These names are coined for marketing needs and pursue the ideas of the name giver. The large number of regionally marked advertising names in the onomastic space of Ekaterinburg indicates to the residents’ awareness of the unique character of the territory, the positivity of its perception, emotional connection, and regional identity. Advertising names continue and develop the naming themes set by the previous levels.

To the Interpretation of Dion. Byz. 32: a Forgotten Episode of the Greek Colonization?

In the work of Dionysius of Byzantium “Sailing through the Bosporus” (32), it is said that there was a tomb of the certain Megarian hero Hipposthenes on the northern shore of the Horn Bay; the reality of this topographic object allows us to consider that character as a historical person. Other sources do not report anything about the Hipposthenes the Megarian, however, the Spartan athlete of the same name, a six-time Olympian winner, is well known, to whom a temple was even dedicated in Sparta, where, according to some prophecy, he was revered on a par with Poseidon (Paus. III. 13. 9; 15. 7; V. 8. 9). The presence of the sanctuary of Poseidon with an oracle on the southern bank of the Horn (Dion. Byz. 9), coupled with the message of Constantine Porphyrogenitus about the participation in the founding of Byzantium, along with the Megarians and Boeotians, also the Lacedaemonians (De themat. II. 1. 43—45 Pertusi) allows us to presumably reconstruct at the end of the VII century B. C. — beginning of the VI century B. C. a certain episode associated with the withdrawal of an additional contingent of colonists to Byzantium, in which the Spartan Hipposthenes was involved. He died or was killed in the course of these events, covering his name with truly immortal glory, for which he received extraordinary honors both in his homeland and in Byzantium.