The Admiral's Bunker

"Unfortunately, it was covered with ash during the severe 1994 volcanic activity and may be some time being restored."

  Although most of the Japanese defense forces were underground in 360 miles of tunnels dug into the volcanic mountains surrounding Rabaul, some command posts and related bunkers were engineered as reinforced concrete fortifications on the harbor coastal rim.

  The Admiral's Bunker, had extensive living, command and communications facilities in it and was in post-war years converted into a museum. Unfortunately, it was covered with ash during the severe 1994 volcanic activity and may be some time being restored.