The small island of Zulkolosz is a redoubt and safe haven for githyanki pirates and other scoundrels of the Astral Sea. A githyanki settlement is built deep inside the island, accessible through tunnels large enough to accommodate astral ships. Githyanki ships sail directly into the bay of this underground haven, which resembles a city of the Underdark with buildings set into the sides of the cave walls. The center of Zulkolosz is a deep chasm that contains a direct portal to the Abyss in the Elemental Chaos, which is a feature that endears it to githyanki who want to raid the githzerai.
Zulkolosz vacillates between maintaining a githyanki-only policy and allowing non-githyanki pirates to moor. At the moment, anyone can use the moorage as long as they pay the hefty fee . In the past, such phases of openness have presaged confrontations with dominion ships or other powerful enemies during which the githyanki have used the pirates of other races as sacrificial cover for their own quick escape. For now, Zulkolosz is a neutral ground where members of various evil factions and races trade information, slaves, and roundhouse kicks.