It does look very weird. For some reason I thought it was a water tower. It is in the town of Oberreid in the Black Forest area in Southern Germany, near Freiburg. But ... it is in fact a defense against against nuclear weapons and natural disasters...
It is called Barbarastollen. Right behind it is an old mine, archiving Germany's cultural heritage and safeguarded for natural and man-made disasters, 400 meters underground. For more information, refer to the Google Maps page and this article. The archive is described also in a Wikipedia article here.
Read more urban exploration stories from theurbanexplorer.net, and other underground stories from planetcaver.net. Read the full Planetskier series at planetskier.net, or all blog articles from Blogspot or TGR. Photos and text (c) 2023 by Jari Arkko. All rights reserved.
This article was originally published in the Planetskier Blogspot article series.
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