From the excavation at ledningsplats Björn (Command Center Björn), May 2015. A first glimpse into a hole in the ground, where concrete and rusted iron could be spotted. Later revealed to be WW2 shelters.
<a href="//commons.wikimedia.org/w/index.php?title=User:Stamboliyski&amp;action=edit&amp;redlink=1" class="new" title="User:Stamboliyski (page does not exist)">Stamboliyski</a>
2015-05-11 10:29:20
<span class="int-own-work" lang="en">Own work</span>