"The Cliff - coral - that extended for miles along the south coast of Biak in which the Japanise had many gun emplacements" From "Darkroom Soldier": "Invading Biak. On May 27-31, 1944, American forces landed on beaches between Mokmer Village and…
"Entry to cliff caves in the coral wall facing the beach at Biak. The cliff was honeycombed with caves" From "Darkroom Soldier": "Fortified Cave. Prior to Allied invasion on May 27 1944, Japanese forces constructed many defenses, such as this…