Abstract
Nemrut Stratovolcano is located on the west coast of Lake Van in Eastern Anatolia. Nemrut Stratovolcano has completed its geological evolution in three main phases: Pre-Caldera Phase, Post-Caldera Phase and Late Phase. In this process, many changes were observed in the area where Caldera is located. It is observed that there have been shifts on the last pyramidal units of Caldera, which is located on the road between Tatvan and Nemrut Caldera. These units, called base spreading products, are located on rhyolitic obsidian and trachies. The unit covers an area of 22 km2 in the eastern parts of the Nemrut Caldera and has an average thickness of 15 m. In this study, the investigations in the area revealed that the pyroclastics were free of cohesion, and the flows and drifts arising from the surface waters. Depending on the thickness of the mass, these flows continue along the surface of the slope towards the deep and threaten the existing road. In this context, it is aimed to determine the deteriorations in the transportation road and to contribute to the fact that this area, which is based on the historical stages, can be a sustainable and permanent natural monument with some landscaping works.
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