Castaway Island is a 2 grid size island ( see pictures for size reference) built for off shore player base building , the island is only reachable via the cove in front of the island and an underground tunnel to go on the island or by flying.

A small lake is present on left side of the island for farmers!

There is plenty of space to build clan bases on the exterior of the island and small bases under the rock formation on the island or on top of the rock formation.