Rock on the "Erdpyramid" - Wald-Hohenegg, Tirol, Austria
Posted by: Groundspeak Regular Member T-Team!
N 47° 12.236 E 010° 47.410
32T E 635578 N 5229380
While doing the Earthcache - Erdpyramiden, I encountered this rocks on top of the "earth pyramides". Nice 2 kilometer walk (approx 1 hour) and interesting geological story.
Waymark Code: WM16KA5
Location: Tirol, Austria
Date Posted: 08/19/2022
Published By:Groundspeak Premium Member Tuena
Views: 5

"At the height of the last ice age, some thousand years ago,a glacier moved down the Inn Valley, from the Engadine. After it crossed the Piller saddle it merged with the glaciers coming from the Pitztal and the Oetztal to form the Inn Valley Glacier. This in turn flowed down the valley to Kufstein and Rosenheim and eventually out into the plains to the north of the Alps.

In the area where you now stand the glacier reached the height of the peak of the Tschirgant, about 2,200 metres. The material at the bottom of the moraine is clay. This clay filled the eroded corners of the original bed of the river with a particular kind of material rather larger than is usually found in the moraine.

After the retreat of the Inn Valley Glacier towards the end of the Ice Age, the Walderbach again found its natural course to the Inn. During this process the stream slowly cut deeper into the soft moraine, which provided less resistance to erosion than did the harder surrounding rocks. This process was encouraged by the water from melting snow each spring and by bursts of heavy rain. Occasionally a stone would protect the softer moraine lying beneath from weathering, rather like a roof tile, so that an earth tower would stand out from the surrounding moraine.

Current conditions show the weathering process at a more advanced stage. The stream has washed away the material from the ice age. Columns in the middte of the moraine have lost their cap-stones and have long since been eroded. Various columns at the edge of the gully rise up tall and slender. At some stage in the future they in turn will lose their cap-stones and will collapse."

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Vinceo visited Rock on the "Erdpyramid" - Wald-Hohenegg, Tirol, Austria 09/30/2023 Vinceo visited it