The entrance of Wawiyai Cave is at sea level. This subsurface karst phenomenon is located in Wawiyai Village, South Waigeo District, at coordinates 00^o18’59.5”S and 130^o39’ 35.5”E. This unmapped cave was previously interpreted to be a dry cave, which was inundated by seawater when the sea level transgressed. The rocks at the cave entrance are boulders of limestone that have collapsed from part of the roof and wall cave. Cave decorations are not well developed, and mostly green due to they are covered in moss. The cave became the habitat of bats and swallows.