This facility is said to have been built in the shape of a cross and disguised as a field hospital to avoid being attacked. When the allied forces realized that it was a communications base, they dropped a bomb on it.
Palau, officially the Republic of Palau (Palauan: Beluu er a Belau), is an island country located in the western Pacific Ocean. It is geographically part of the larger island group of Micronesia. The country's population of around 21,000 is spread across 250 islands forming the western chain of the Caroline Islands. The most populous island is Koror. The capital Ngerulmud is located in Melekeok State on the nearby island of Babeldaob. The islands share maritime boundaries with Indonesia, the Philippines, and the Federated States of Micronesia. (from http://en.wikipedia.org/wiki/Palau)