Theoretically you could hide a center expansion by positioning your workers on a specific side of the Command Center or Nexus. The Zerg hiding an expansion isn't possible as the creep will give away the Hatchery.
The map has a familiar lookin...
Description
Four player map designed around a center gold expansion protected by temple walls and destructible rocks. Each temple plays host to a Xel' Naga Watchtower that overlooks a large portion of the center but fails to reveal the entire natural expansions and gold expansion.
The (4)First Encounter Team
