A multi-chambered cave complex on the eastern flank of the Umurbrogol, used as a final defensive position by part of the Japanese garrison. Several chambers can be entered with a guide and a torch. Inside are corroded rifles, sake bottles, ration tins, gas mask canisters, and the rusted remains of cooking gear.
The atmosphere is solemn and the experience is not for everyone. Treat the site as a war grave — touch nothing, take nothing.