Inert Atoll is the first map I made with Starcraft 2 editor. It wasn't supposed to be a full project so don't expect a sophisticated work ^^
The rush distance is extremely short and the ramp is wide. I think it will favor rushes for all races (reapers, "x" gate, 6 pool, etc.) There is an inbase expansion blocked by rocks. Other expansions are quite tough to secure. The gold is easily accessible but can be attacked from many angles.
An Atoll is a ring shaped island enclosing a lagoon. Since an Atoll is usually a rich environment, "Inert Atoll" is a kind of oxymoron name...