I recall a few years ago playing this one map in Doomed2Frag. I think it may have been from the mod, but it was possible that it was part of a map pack I had at the time.

The map I'm trying to remember had an outside area with cliffs and a portal that opens up inside the side of a tall cliff outcropping that leads to a different part of the level. I think this was a map I played around 2010-2012, so it wasn't a recent release. Has anyone seen a map like this?

I'll go check that mod to see if I can find it for you, KommissarReb. EDIT: It doesn't seem to want to load for some reason.

Edited 2 days after the original posting.