Narrow crevasses and clefts in the rock, overgrown with mosses and lichens, huge rock towers, powerful blocks of stone with bizarre shapes caused by weathering - a wild, unspoilt landscape dominates the Ferschweiler plateau and the surrounding area. Towards the end of the last Ice Age - around 12,000 years ago - the change from frost and melt periods led to huge rockfalls on the edge of the plateau. A large sandstone block tipped out of the plateau wall, opening up a cleft in the rock which today is 28 meters deep, and which fascinates everyone who has walked through it. This is the “Teufelsschlucht”, or devil’s crevasse.