Hill (Call of Duty 4)

Overgrown was a planned multiplayer map in Call of Duty 4: Modern Warfare. All that is known to prove its existence is a file called "loadscreen_mp_hill.iwi" present in the game's source files. From its loadscreen, it appears to be an augmented take on "Heat". From this, it can be inferred that the teams were planned to be SAS vs. Spetsnaz, that it takes place in the Altai Mountain Range, and that it would support all gametypes.