Tomb Raider 1 - Level 06: Colosseum
Beneath St. Francis monastery lies what seems to be the ruins of an ancient (underground?) civilization. Lara continues to explore them and enters The Colosseum (not the one in Rome, of course). There she will find underground lions, underground gorillas and underground bats (ok, so that's kind of normal).
She will also have to put up with Pierre appearing at random moments to shoot at her. Will Lara ever find the second piece of the Scion?