Anyone know what map this is?

This is a dumb question and im sure NOBODY will know the answer. but I made a video a while back and I needed a picture of a mountain so I took a screenshot of a mountain in a GMOD map. This is the pic

Its the mountain, and not the other stuff

Ive since lost the image and want to take the screenshot of the mountain again but forgot what map it was from. Im pretty sure it was a downloaded map and not one of the original ones.

You lost the image, wait what?