let me share almost the same story i heard from my father when he visited in datu kawilan bukidnon to where they went for tree planting, a huge acacia tree was on top of the hill and underneath its root he noticed a cement like very big stone. a cave entrance is located approx at the middle of the hill when he and the bagobo guide entered they saw a silver looking drum upon opening they saw it is full of green like powder, they also seen files of gold like bars arranged systematically. on his analysis the big cement like stone above the hill serves as weight that a wrong move of taking any bar would collapse the whole cave. the chieftain of the tribe told him that his father the late datu kawilan was one of those who buried the bars, after burying the japanese executed them, the late datu rolled over the hill then hide so the japanese would'nt see him. according to him the late datu brought him to the site sometime in 1980's they protected the area according to him, the late datu died in 1996. my father have not able to return to datu kawilan's place because he had an accident, until now he couldn't walk normally.