What does this indicate? yamashita treasure marker

[oroyama]

Hi to all!
i am a skeptic when it comes to the fabled yamashita treasure in the Philippines.
But now i think i am one of its believers.
a hole was dug on a suspected site and at 47 feet one side of the hole has a somewhat soft spot around 3 square foot which is different from the surrounding area. diggers continue digging and the soft spot was tapering little by little outwards. imagine the soft spot like a pyramid shape but tilted 90 degrees/its apex points to one side. what does this indicate? is this some kind of marker pointing to the items? the surrounding sides are hard cement-like wallings except for that soft spot made of some kind of cement that has not hardened.
this shape is man-made as the base is about equal in size 3 feet x 3 feet.
the site could be positive of items because at different layers some markers were found incldg booby trap, big bullet about 2 inches diameter and thick cement floorings.
anybody has some knowledge about these?
thanks

[gldhntr]

sounds like those dreaded ''keep on digging'' markers........i hate when that happens...................