A Player Destruction map set in a mining facility or something.
The main gimmick of the map is that the players are collecting australium from killed enemies. A minecart barrels down middle every once in a while and stops at the designated capture point. Deposit your ingots there!
Middle Flank Spawn Room Top of the hill Another look at the top of the hill Blu's spawn courtyard Another look at mid Where the cart stops 2nd courtyard