Creek Mountain is the military base where the Stargate Program was located until events in the Stargate movie. It is unknown when - between Abydos mission and Apophis attack on Stargate command - Stargate was moved to Cheyenne Mountain.
Behind the scenesEdit
There is no Creek Mountain military installation in real life, but Cheyenne Mountain Complex is an actual military base. Due to the great similarity between the two, it seems reasonable to conclude the former is merely a filmic clone of the latter. In fact, according to the Internet Movie Database, the entrance to Creek Mountain used in the film was reused from the 1983 movie WarGames, where it doubled for the entrance to Cheyenne Mountain.