Tabu do you know at what depth one might be more likely to hit this cavern system you're referring to?
I’m so sorry for not seeming to answer your question sooner. I did attempt to reply twice but somehow my messages didnt get through due to lapses on my part to send them properly according to TreasureNet protocol. Will try again ( for the third time).
I haven’t been to Samal Island for quite some time. However, a friend of mine and his treasure hunting buddies went there not too long ago to dig on the southern tip of the island. They were acting on a landowner’s tip that a couple of Japanese went to a particular area in his farm apparently searching for WWII-era signs and landmarks. At the same time they also heard of stories about wartime witnesses who saw Japanese soldiers digging a tunnel and carrying heavy boxes which were subsequently stored within. Based on signs they found, my friend and his group attempted to dig a hole wide enough for two individuals to work on by shifts. Upon reaching a depth of 30 feet or so, they were intrigued by the presence of insects- - millipedes crawling out of the tiny crevices in the moist wall. Moreover, each time they worked on the floor pounding on their stone chisels with sledge hammers, distinct echoes can be heard leading the group to suspect that they were on the roof or ceiling of a very big void possibly a cavern or a cavern system that has not been previously explored or mapped out. Falling through the ceiling accidentally was a distinct possibility. Hence, the operation was halted albeit temporarily. It may be recalled that Samal is a massive roughly dome-shaped limestone formation and therefore the existence of cavernous voids would hardly be surprising. Personally, I suspect the Japanese tunneled through the massive limestone at some point and gained access to such a cavern system where they hid their loot most likely Yamashita gold. The entrance of the tunnel would have been obliterated by explosives after the concealment of the loot.
