Silabur Cave, Serian, Sarawak, East Malaysia is a limestone cave near Serian in Sarawak. The cave is known to local people as a nesting place for thousands of swiftlet and bats. The swiftlet (aerodramus maximus) build nest using their saliva attaching it high up on the cave ceiling. From time to time the locals harvested those nests , which is processed into high value product and mostly exported to China
