Some pictures from the inside. It was pitch-black inside and our flashlight was a bit weak so the camera flash was a good way to see a bit more.
<a rel="nofollow" class="external text" href="https://www.flickr.com/people/9294749@N03">Gerwin Sturm</a> from Vienna, Austria
CC BY-SA 2.0
<a rel="nofollow" class="external text" href="https://www.flickr.com/photos/scarygami/4555762872/">Shelter/bunker/mine Mizzi-Langer-Wand</a>