그라펜베르크‬에서 가장 멋진 ‪18‬개의 협곡

Beautiful gorge that was hardly expected here.

Walter Röhm, author of the Bad Uracher Wanderbuch, explains the formation of the hell holes like this - they are actually crevices in the rocks of the Weißjura delta lying on top in this area of the Alb - with the fact that the underlying marl layers of the Weißjura gamma are to be regarded as impermeable to water. As a result, water that has penetrated into the upper layers, encountering the marl, must come out and flow down the slope and cannot seep away. During this process, according to Röhm, the layers of marl soften and become slippery, so that they no longer offer proper support to the rocks above. This process continues until individual clods tear out and go to the valley. The dizzyingly narrow rocks lying down the valley – if not already hanging – are floes that are doomed to fall but have not yet gone down into the valley, and which have already become detached from the Alb body as a result of the process described above. It will be difficult to predict when they will follow other crash candidates that have preceded them.

Walter Röhm, author of the Bad Urach hiking book, explains how the hell holes came about so - actually they are cracks in the rocks of the Weißjura delta lying on top in this area of the Alb - so that the underlying marl layers of the Weißjura gamma are to be regarded as impermeable to water. As a result, water that has penetrated into the upper layers, hitting the marl, must come out and flow down the slope and cannot seep away. During this process, according to Röhm, the layers of marl soften and become slippery, so that they no longer offer proper support to the rocks above. This process continues until individual clods tear out and go to the valley. The dizzyingly narrow rocks lying down the valley – if not already hanging – are floes that are doomed to fall but have not yet gone down into the valley, and which have already become detached from the Alb body as a result of the process described above. It will be difficult to predict when they will follow other crash candidates that have preceded them.

Seldom along the water but wonderful colors in autumn

Simply amazing 🤩👍🤩 Best to marvel at yourself!

Wild rock crevices and ravines on the edge of the Alb.

An absolute highlight. Be sure to walk through it and use the two short steel ladders. The canyon is very impressive!

Here you should already know where to put your feet ;) Two ladders and a rocky climb out of the hell hole... It can be very slippery there and as an unsafe occasional hiker you should think twice. At least not go alone. But when you do it, it's an unforgettable experience. The history of the earth is presented very intensively right here. We were very impressed down there ;)