The native of Biak called this cave ‘Abiyau Binzar’. Abiyau means cave and Binzar means grandmother. It is said that in the old times there was a grandmother living in this cave. During the second world war the Japanese army hid in this cave which simultaneously functioned as logistic centre. It is located in Sumberker Village, Biak Kota District; 15 minutes ride to get there from Biak town.