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"Teufelsloch" (Devil's Hole) Bad Boll

Teufelsloch Bad Boll (Gemeinde Bad Boll)The area around the "Teufelsloch" is designated as a nature reserve. Characteristic for this region are the deep-channelled chasms and streams, cutting into the rock like a knife. This is due to the 100-m layer of clay loam from the Brown Jurassic Period which is easily eroded by water. However, this clay is also mixed with other harder rock layers from the Brown Jurassic Period. This explains how the bank of waterfalls at the back of the nature reserve originated,  the so-called "breite Stein" (broad stone) over which the water cascades and drops to a depth of about 50 m.