Coagulation
From Halopedia, the Halo wiki
Summary
Coagulation is the sister level of Blood Gulch, that was recreated for Halo 2. Some improvements to the stage include an underground entrance to a Banshee, a wooded area and a rock slide for sniping the enemy, often refered to as "Sniper Rock." Coagulation also features a Rocket Launcher at one end of a short path in the middle of the canyon, as well as small caches on rocky balconies that include such goodies as an Overshield, Active Camouflage, Battle Rifle, and Brute Shot. It's dull name is Coagulatianous Canyon, but is called Coagulation for short, and some people just call it "Coag"