Cercetări efectuate la Băile Figa în anii 2016–2019 și considerații privind deslușirea valențelor unui peisaj salin hibrid / Research carried out at Băile Figa during 2016–2019 Revealing the potential of a hybrid saltscape

Abstract

The article presents the preliminary results of the interdisciplinary research (geological and geospatial studies, archaeological excavations, salt production experiments, and ethnographic survey) carried out during 2016-2019, in the site and hybrid saltscape of Băile Figa, well known for its remarkable environmental, ancient and current salt exploitation evidence. Besides, the article aims to evaluate the contribution of the recent research to a better understanding of the environmental context of the site and ancient salt production technology in the Inner Carpathian region. Also, it focuses on the hybrid character of the site and its potential to the transdisciplinary and holistic study. Environmental context. The site is rich in environmental, archaeological and ethnographic evidence. It is positioned in the salt-rich area of the Someșul Mare Basin at the northern edge of the Transylvanian Plain (Fig. 1/2; 2/1). The site is part of the landscape that was and is strongly affected by the dynamics of a salt diapir (Fig. 2/2) and deposits of salt mud, brine and halo-biotic factors, as well as by the intense human activity. Excavation. The excavation was carried out in Trench S.XV (16 m x 14 m), located in the central-southern sector of the site. The trench cut through the stream-bed and steep and high banks of the salt stream that crosses the site from south to north (Fig. 4; 5, 10). Its profile sections show four major stratigraphic units: a blackish topsoil, yellow clay mixed with gravel, salty mud, and the rock salt massif. The excavation was conducted in the mud layer, in the central sector of the trench, and in the clay-and-gravel layer found in its lateral sectors. In the area of ca. 60 square meters of the central sector, the excavation has reached the rock salt massif (Fig. 7-11). The excavation in the trench has uncovered rich evidence for Late Bronze Age salt production: seven interconnected features and around one hundred artifacts. The vast majority of the finds have been uncovered in the mud layer. The uncovered features included five timber structures surviving in the salt mud layer, as well as a ditch and a pit dug in the rock salt massif. Feature 1-XV-2013 (Fig. 12; 14/1) is a structure that includes a cone-shaped wattle-lined pit surrounded by a roundish wattle-made fence. The pit cuts through the mud up to the rock salt massif. Its rock salt bottom was sectioned by a ditch, 0.4-0.5 m wide and over 0.9 m deep. It seems that first, by rather extensive digging, the soil and mud were removed down to the salt massif. Then, a ditch, about 5 m long, 0.4 m wide and over 0.9 m deep (see below), was dug in the rock, from east to west. After that, a cone-shaped outer framework made of wattle (D maximal: 1.2 m, D minimal: 0.4 m, H: 1.8 m) was placed over the ditch, narrow end down. After that, the empty space around the framework was filled with mud. Then the pit was surrounded by a roundish wattle fence. A 1.6 m long massive rope made of three twisted threads (Clematis vitalba) has been found in the ditch (Fig. 41). Four samples taken from the wattle framework have produced five dates which fall between 2821±24 and 2778±26 BP. Feature 2-XV-2013 (Fig. 13) was uncovered in the northern part of the trench, on the right side of the stream, between feature 1-XV-2013 (see above) and the north edge of the trench. It was a rectilinear fence, 3.6 m long, built of vertical planks, split troughs, and channelled pieces, pushed into the mud down to the rock salt massif. Three fragments of the troughs from the fence were dendrochronologically dated to the period between 996 and 980 BC. Feature 1-XV-2015 (Fig. 14) was uncovered in the central-southern part of the trench. It was a corridor, 2.5 m long and 1 m wide, oriented E – W, made of two parallel rectilinear alignments of massive upright poles driven into the mud. One of its poles was at the same time part of the fence of the Feature 1-XV-2013. The corridor, on the base of three samples, has been radiocarbon-dated between 2870±32 and 2718±30 BP. Feature 1-XV-2018 (Fig. 15-17) was partially uncovered in the north-west part of the trench, about 3.5 m west of the stream. It is a 5 m long fence, oriented S – N, made of vertical planks, stakes (Fig. 17/2), and a split trough (Fig. 17/1), stuck into the mud, and four horizontal planks linking them to each other (Fig.17/2). Not dated. Feature 2-XV-2018 (Fig. 18; 19/1) was partially uncovered in the western part of the trench, in the rock salt massif. It is a roundish pit (over 2.5 x 1.8 m) with irregular edges, ca. 1.7 m deep below the salt massif surface. Not dated. Feature 3-XV-2018 (Fig. 19; 20) was uncovered in the central part of the trench. It was a ditch dug in the salt massif, 0.4 to 0.8 m wide, over 0.9 m deep, and about 4 m long. It cuts through the bottom of feature 1-XV-2013 (Fig. 12/2) and links it to the feature 2-XV-2018. Not dated. Feature 4-XV-2018 (Fig. 19/1; 20-22) was uncovered in the south-east corner of the trench, covering about 4 x 4 m, and consisted of a cluster of parallel beams laying on the salt massif, and a few vertical poles. The feature continues eastwards and southwards beyond the sides of the trench. On the base of three samples, it was radiocarbon-dated between 2856±31 and 2817±30 BP. Artifacts. We found some 100 artifacts in Trench S.XV during the excavation seasons, between 2016 and 2019. Most of them were made of wood, 1 of hemp (?), and 3 of stone (basalt). The wooden artifacts include 31 component pieces and fragments of trough bodies (Fig. 24-27), 17 channelled pieces (Fig. 28-30), 2 shovels (Fig. 33), 12 paddles (Fig. 31; 32), 4 mallets (Fig. 34/2,3), an L-shaped haft for a socketedaxe (Fig. 34/1), 2 pans (Fig. 35), a bowl (Fig. 36), fragments of 2 ladders (Fig. 37), 3 knife-shaped tools (Fig. 38/2,3), 11 rods with pointed end (Fig. 38/4), 4 loops made of twisted twigs (Fig. 40), a massive rope made of three twisted threads (Clematis vitalba) (Fig. 41), and 5 wedges. One of the artifacts found was made of plant material, possibly hemp: a small twisted cord (it may come from a peg inserted in the trough hole). Stone (basalt) artifacts include 2 mining hammers (mining tools) with engraved grooves aimed to fix the bindings (Fig. 44/1,3), an ovoid-shaped object with many percussion marks at its thicker end (Fig. 44/2). The chronology of the finds. In 2018 4 samples (wattle) from the Feature 1-XV-2013 were dated at Oxford University Research Laboratory for Archaeology and the History of Art / Radiocarbon Accelerator Unit. In 2019 some of the timber features (1-XV-2015 and 4-XV-2018) and wooden artifacts (the ladder, the troughs nos. 4 and 5 and some others) were radiocarbon dated by “Horia Hulubei” National Institute for Research and Development in Physics and Nuclear Engineering. Most of the dates fall between 1000 – 900 cal BC. Just one date (a wooden bowl) falls between ca. 1419-1262 cal BC (Tabels 1, 2, 3). The structures and most of the artifacts uncovered in S.XV date to ca. XI-IX centuries cal BC and seem to have been part of a complex production system aimed at brine and rock salt processing. Differential distribution of finds across the site. The research has revealed differential distribution of finds across the site. Thus, the evidence dating to ca. 2300 – 2000 cal BC (a pit dug in the rock massif and pottery), 1600 – 1400 cal BC (a wattle-built structure and wooden troughs), and 400 – 180 cal BC (timber-lined shaft, a wooden ladder and pottery) is mainly concentrated in the southern sector of the site. In exchange, the finds dating to ca. 1400 – 1100 cal BC have mainly been uncovered in the south-central part of the site (timber structures) and northern part of the site (pottery). The evidence dating to about 1050 – 850 cal BC covers two distinct areas: the south-central and northern sectors of the site. While about thirty fragmented troughs have been found in the south-central sector, no one object of this kind has been found in the northern sector. There are also differences concerning the timber structures between these sectors of the site. These strongly suggest that in XI – IX centuries cal BC, at least two different and complementary production areas were active in the site. Salt production experiments. The experiments on salt production, using faithful replicas of Late Bronze Age artifacts uncovered in trenches S.I and S.XV – troughs, channelled pieces, mallets, wedges, stone mining hammers, etc. – aimed to obtain from the different source material – rock salt massif, brine, and mud – various forms of salt: lumps of rock salt, fine salt, and highly concentrated and pure brine. The experiments showed the technical validity of several techniques. The most effective were as follows: 1. Detaching lumps of rock salt from the massif. By means of jets of fresh water directed with the troughs (along the twisted cords fitted in the perforations of the sticks that went through the pegs which were fixed in the holes at the base of the trough) depressions were simultaneously created in the rock salt at ten to twenty spots, 10 to 15 cm apart and 7 to 12 cm deep. This process took few hours (Fig. 45/1). It was noticed that each hole generated one to three cracks in the salt massif, around 1 m long and 5 to 10 cm deep. The holes and cracks allowed the insertion of wooden wedges. By hitting them with heavy wooden mallets, the wedges were pushed down to ca. 20 cm deep. Finally, using hooked sticks, many blocks of rock salt could be detached from the massif. The larger blocks were easily broken by stone hammers (mining tools). 2. Producing small pieces of salt and fine salt from the rock salt massif. The first stages of the process were identical to the previously described. After the holes and cracks were created, the rock salt mass was beaten with stone hammers (mining tools) along the cracks and holes, so that small pieces of salt, as well as wet and soft fine salt, were easily separated from the mass. Thus, about 50 kilograms of fine salt were collected in 30 minutes during the experiment (Fig. 45/2). 3. Boiling brine in the troughs with hot stones and drawing off the brine. Stones heated as much as possible in a fire were immersed in the brine with which the trough was filled, thus bringing it to the boil (Fig. 46). The boiling continued until the salt begun to crystallize. After that, the trough, full of highly concentrated brine, was left motionless for several hours. The insoluble impurities of the brine sedimented according to their specific weight: the lightest of them floated to the top, while the heaviest (metals and minerals) settled on the bottom. Above the sediment lying on the bottom of the trough and under that at the top remained a rather thick layer of fairly clean brine. During the experiments, the lower sediment has never reached 3 cm in thickness. The wider tops of the plugs that were inserted into the holes found at the bottom of the trough, were at least 3 cm high. Because of this, the upper edges of the plugs remained above the sediment on the bottom of the trough. We then slightly raised the long sticks that were tightly inserted into the axial holes of the plugs, which in turn tightly closed the holes in the trough’s bottom. The sticks were fixed and maintained in a slightly raised position by a kind of pliers – half split twigs – set transversely over the trough opening. In this way, the brine was allowed to drain easily into channelled pieces set under the trough. The brine then flowed through the channelled pieces to the next trough(s). The process could be repeated in the next trough(s) until the salt makers would get a fairly clean and highly concentrated brine. Ethnographic survey. Băile Figa and its surroundings are places where the evidence for ethnographic research, of what is commonly called ‘the traditional salt civilization’, can still be found. In every ancient salt production archaeological site known in Romania, without any exception, the current folk salt exploitation is still in progress. The latter offers to these sites a valuable research potential, almost unique in Europe, for the ethnoarchaeological research. The ethnographic survey has attested a number of aspects of the present-day folk ways of exploiting brine, rock salt, salt mud, and halophytic vegetation, as well as other traditional practices and customs related to these resources. Brine folk exploitation. The most exploited saline occurrence at Băile Figa is currently brine. Brine is taken directly from the numerous springs filling the central salty stream valley (Fig. 48/1). Then, it is loaded into plastic drums of 50 to 200 litres and transported by carts to the neighbouring villages (Fig. 48/2). The locals told us that, in the past, the brine was transported in large, cone-shaped barrels, called “bote mari”, of 60 litres, made of softwood boards connected to each other with circles of hazel twigs (Fig. 49/5), in smaller containers, of approx. 20 litres, called “barbânțe” (Fig. 49/3), as well as in smaller containers hollowed out of tree trunks and called “bote” (Fig. 49/2). The most remote localities, to which the brine from Băile Figa is transported, are situated at a distance of 11 km. But most people that currently get brine from Băile Figa live within a maximum perimeter of 6 km. Brine is mainly used for preserving meat, bacon (especially around the winter holidays), and vegetables. Sometimes the brine is used for health care purposes, mainly against colds, rheumatic pains, skin diseases or circulatory deficiencies, either on the spot or at home. In the 1960s and 1970s, the locals built two brine ponds and used them for health cure baths. Rock salt folk exploitation. According to some elderly locals, until 1989, the rock salt was periodically extracted at Băile Figa, by manual or mechanized digging of vertical pits. It was mainly used to supplement the feed of domestic animals in the individual households, sheepfolds (Fig. 50) and collective farms or state agricultural enterprises. Sometimes, the locals crushed and grinded salt lumps. In some households in the village of Figa, we have identified and documented some primitive millstones used in salt grinding (Fig. 49/1). Ground salt is added to animal feed and very rarely in human food, people being sure that this kind of salt can harm their health. Sapropelic mud folk exploitation. The ethnographic surveys have documented the traditional exploitation of sapropelic mud at Băile Figa. It is found only in some limited spots of the salt stream valley. The spots with small deposits of sapropelic mud are known only by “connoisseurs” who, among the clues, are guided by a specific smell. The sapropelic mud is used for health care purposes, especially for the treatment of rheumatic diseases. The mud is applied, either on most of the body or only on the parts affected by pain. Sometimes, the mud is applied to animal wounds, for disinfection and drying. Mud-based treatments are done both on-site and at home. Shepherding. Until the building, during 2007 – 2011, of the leisure resort, Băile Figa was the favourite place for grazing for the local domestic animals (sheep, cows, buffaloes, and horses). The animals, according to the information delivered by the shepherds, loved salt grass and brine (Fig. 49/2). Shepherds tried to prevent the animals from drinking brine from the springs because their fondness of the salty taste made them to drink it in unhealthy quantities, so that they could “swell” and die. Beekeeping. In the northern sector of the salt stream valley, at the surface of the soil, in the summer of 2018, a primitive beehive made of a hollowed-out oak trunk was discovered (Fig. 48/4). So far, as we can know, it is a unique find of this sort in a saline context.