Halo: Combat Evolved. It is set in an enclosed, symmetrical canyon with a base at either end and an open field between. The level supports vehicles and is recommended for 4-16 players. The level is almost entirely void of life, save some sparse grass and bushes.
Blood Gulch is set in a vast canyon, with two bases, a huge open field with hills and ditches, and caves and cliffs along the rock walls. In addition, there are teleporters located on each base's roof.