From the point where the path curves towards the north-east, the itinerary leaves the massive, pale limestones of the Devonian and continues within the Hochwipfel Formation, made up here of outcrops of easily-flaking, dark shales and siltstones. These rocks were formed during the Lower Carboniferous, a period characterized by strong tectonic movements that led to sinking of some areas and the uplifting of others. Much of the material deposited by the rivers in this period was the result of the erosion of the emergent lands and subsequent submarine landslides. The Hochwipfel Formation is almost devoid of fossils, except for plant remains.

Previous reading
Entrance to the underground system of the Timau Caves
Next reading
The torrential incision of the Rio Gaier