Great Khan Supply Cave

Great Khan supply caves are unmarked locations in the Mojave Wasteland, two of which are located almost directly north of Bitter Springs, with the third located to the northwest. The three caves are involved in two quests for Captain Gilles, namely Climb Ev'ry Mountain and No, Not Much.

Irradiated Supply Cave
This cave is found at the north edge of Bitter Springs, just to the left of a path leading to the nightstalker supply cave. The cave is very irradiated due to being filled with radioactive waste barrels. Four giant soldier ants and three giant worker ants guard the main chamber. The radioactive supply cache, is located at the back of the cave behind a broken fence. The irradiated cache can be turned in to Captain Gilles at Bitter Springs camp, if you have 25 Science for good karma, or by lying for a karma loss.

Nightstalker Den Supply Cave
This cave is north of Bitter Springs at the end of a path leading to the top of the hill. It consists of a large open room containing the bloody remains of kills from the nightstalkers that dwell here, and a small passage way leading to an easy locked gate, behind which are a couple of ammunition boxes and a Great Khan supply cache. The nightstalkers will rush out to the main cave area when approaching the passage to the supply cache.

Oscar Velasco's Supply Cave
This unmarked supply cache cave is home to Oscar Velasco as part of the quest Climb Ev'ry Mountain and contains a Great Khan supply cache behind an easy locked gate just to the left after entering. The cave is located between Bloodborne Cave and Bitter Springs. There are two passages to the main chamber where Velasco is camped. Taking the direct path straight from the entrance will result in him noticing the player and initiating dialogue. The side path to the right has a bear trap and then several mines. The mines are not armed when on good terms with the Khans and if Climb Ev'ry Mountain is resolved peacefully the mines will not be marked as owned. The key to the locked gates in both of the supply caves can be obtained from Velasco, either though dialogue or from his corpse.

Appearances
The Great Khan supply caves appear in Fallout: New Vegas.