Concrete floor of the 1941 double hangar, seen in 2014.   Now part of the Fingal Wildlife Management Area.
<a href="//commons.wikimedia.org/wiki/User:SteveTheAirman" title="User:SteveTheAirman">John S. (Steve) Bond</a>
CC BY-SA 4.0
<span class="int-own-work" lang="en">Own work</span>