hi el26
japanese helmets are found all over that area of the world and they are still digging them up in philipines as we speak all those islands are reaping with them im all so sure there are many caves in those islands that still hase japanese treasures hidden in them. my opinion some of those caves are still booby traped ready to explode i say leave all those treasures right where they sit hope this helps you thanks for your intres andy militarynut