It serves as a 6-player StarCraft II multiplayer map.
There's 2 island golden minerals on the corners, one in southeast and another in northwest, and another two with destructible rocks near these islands. The two xel'naga towers are located near a expansion each, both in the central area.
Blizzard Entertainment. StarCraft II. (Activision Blizzard) Map: Dig Site (in English). 2010.