Okay hopefully this time it's not because I have the terrain mod. This time I have a fresh loaded map with no alterations.

The base at 22500x 3500y has some floating H-barriers, and the office building and probably other things clip into the ground. Probably worth a once-over by the mapper.


As a somewhat related but positive aside, the tunnel is really cool. I'm gonna launch Gripens out of it. :>