【war-related site】Underground Bunker of the Navy’s 313th Construction Corps

In a wide area from the Miyakojima City Botanical Garden to the Miyako Youth Center, there are 34 openings to bunkers.
This cluster of bunkers are related to the headquarters for the 313th Construction Corps of the Navy (with 650 personnel), designated to build strongpoints in the fields for military operations. Among the bunkers, there are those that extend to a total length of 500 meters or more, being the longest dugout confirmed on Miyako Island.