Both the Brichkuhle and the Wehringer Pohl are typical "sinkholes", as they often occur in regions with calcareous underground. Limestone can be released from precipitation water, especially along rock fissures, whereby cavities (caves) can also form in the subsurface. If such a cavity breaks in the ground, the typical funnel-shaped depressions formed on the earth's surface, the "sinkholes". The Great Brichkuhle as the largest sinkhole in this region is at least about 40 m in diameter and 25 m deep. While the Brichkuhle has dense trees, water is available year round in the Wehringer Pohl, as the fractures in the limestone subsoil are closed by flooded loams. Both sinkholes are protected as natural monuments. In the sinkhole, the original vegetation has been preserved, including especially the protected stag tongue.
July 16, 2018
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