From The TimeSplitters Wiki

Mars Prison
Size	Large
Location	On Mars
Climate	None
Unlockable	Unlocked by Default
Recommended Bots	Lazarus Mumble Angel Forge Ghengis Kant Lt. Black Prison Officer Mordecai Jones Comrade Papadov INSETICK SD/12 Ivor Baddic Time Assassin
Recommended Weapons	Sci-Fi Handgun Plasma Autorifle Sci-Fi Sniper Rocket Launcher Plasma Grenades Timed Mines

Mars Prison is set on Mars. It seems a large map when compared to the other maps on TimeSplitters Future Perfect. It has wide open courtyards, with ramps and walkways running round them and a 2 storey supply room/ bunkhouse.

This level is playable on the Assault Mode. In assault and capture the bag, the arena is expanded. The outside areas are accessible, though the back entrance to the prison is sealed off during assault, for obvious reasons. Also the cell area is accessible serving as a base for capture the bag, and the location of the final objective in assault. Because of this expansion, I think it is possible that this is one of the furthest apart bag bases in the game.