Travel InfoManado Guide

Japanese Cave

Japanese Cave

The Japanese Cave of Tonsea in Minahasa, North Sulawesi, is a relic from World War II (1942–1945) during the Japanese occupation. The cave was built as a defensive bunker by excavating hills using forced labor (romusha). It functioned as a military headquarters, shelter, logistics storage area, and evacuation route. Today, the Tonsea Japanese Cave has become a historical site and an educational tourist attraction.