The three so-called Kamikaze Caves (神風洞), grottoes measuring 10m wide and 30m deep, were built by the occupying Japanese forces to house motorboats wired with explosives to disrupt Allied shipping during WWII. They were never used. You'll pass the caves when entering Sok Kwu Wan from the south (ie from the Family Trail linking this village with Yung Shue Wan).