Shelled, semi detsroyed, destructed, broken, cracked-open Infantry casemate bunker concrete fortress pillbox “Bunker K-51/11/A-160” řopík near Chomutov,, Czechia part of the Kočičák museum http://www.kocicak.cz
Map: https://en.mapy.cz/s/japujovesu
https://en.wikipedia.org/wiki/Czechoslovak_border_fortifications
Former part of Czechoslovak border fortification built in 1930’s, now under heritage protection. http://www.fortif.net/files/overview.php
Feel free to walk in or use the Annotiations tour.
Photogrammetry scan (350x24MP DSLR + drone by https://sketchfab.com/kubacpetr )