Help finding a island ttt map.

Not island 17. The map was an island that was raised above water that would kill you if you fell off. It had like 2 sides separated by rock. One side was a small city are, the other side had a church like building and small shack that lead to an underground bunker/base/lab. Anyone know what map I am trying to describe, I played it a long time ago and it was one of my favorites but I cant remember its name now.

Found it in a map pack. ttt_enclave_b1.bsp

Enclave. Your welcome.