You seek shelter in an old abandoned cave of a mining corporation.
You have a well defendable fortress in a windy, dusty corner of the large cave, encircled by lava pits and a high wall (blocks even air units). But as the recent dwellers carried all valuable resources together for clearance in a central place, the key to success is to gather the rich minerals from the center of the map before you run out of resources in your stronghold.
Great for 2v2, 1v1 and 1v1v1v1 as map is mirrored and all four players have the same chances.
20100909 First version 20100912 Just fixed a small typo in Map description 20100915 Increased no-fly zones to hard-radius 4.3