Underground Caves

The cave has apperantly been in Blood Gulch scince the start of the series, this cavern holds a blue base, red base, and a computer, which shows everything in the canyon, including Vic jr. The Red Team arrives there to find Sarge, given a funeral even though he was still alive, he believed he was dead, as command said so. It appears that every body buried in Blood Gulch ends up there. An explanation, however, is never given as to the nature of the caves, or the Blue and Red bases there.