treasure yamashita

Is anyone have an idea about this sign?

hi guys we accidentally found Closed tunnel Near in The river and they have a rock sign in the river we don't know this but we found it and very wierd whene we go there the stunes is same size. is This A Treasure Or A Camp. i uploaded the video on youtube... please help me

anybody can help me interpret markings a possible treasure this is origenal poster of mountain [/IMG] according to story some of japanese track is going to mountian but after ww2 peacefull the track is no longer found or never return.. this story is from the great great grandfather of owner of...