Over on Lamma Island, you’ll find a ruined relic of Japan’s presence in Hong Kong during World War Two. Built by the Japanese during the war, the three Kamikaze Caves were originally used to conceal speedboats. These grottoes, measuring some 10 meters by 30 meters, were used by the Japanese to keep motorboats wired with explosive that could be used to disrupt Allied shipping.
The prep work was done, but the boast — and the caves — were never actually used. You’ll want to be careful when visiting through. One is completely closed off for safety reasons, while the second sometimes floods with water during the wet season. At the third, a plaque proclaims these are “Kamikaze grottoes,” and explains how they came to be.
The caves can be found at Sok Kwu Wan on Lamma Island.