I haven't played GMod much in the past few years, but about 10 years ago I did. There was a map I used to mess around on quite a bit and I was hoping to track it down.
If I'm remembering it right, it's in a desert with a long straight road. There's a small village of small enterable houses. I think in that village, or nearby, there was some "secret entrance" to some underground military bunker. It must have been an old map, because I remember finding it early on around 2008.
Any ideas?