Northstar,
For your perusal....here are the examples of our Japs rock(boulder) marker....well defined and well carved. The pictures , I already posted it in several treasure forums and some of YTHr here had already seen some of it.
1) 10 foot Smiling Face carved on 70 foot high cliff wall........its Pinoy version of Mt. Rushmore's face carvings.
2) Skull Mountain.....the whole mountain was shaped into skull like the Phantom's skull mountain ,hehehe Boy Lara was excited when he saw it on the way to Manila from Cagayan.
3) Perfectly Cut Boulder .... a house size boulder was perfectly cut into two, the edge is so sharp...looks like cut by 50 footer circular saw?
4) Heart of Valencia.....a 20 ton boulder was carved and shape into a heart, the boulder nearby was carved into hole and several pieces of gold bars was recovered hidden inside.
5) Triangle, Arrow and Square......carved into rock boulder.
6) 20 footer ARROW (see through, tagusan ang butas).....carved from an rock island in Isabela.
7) 20 footer STAR (see through, tagusan ang butas) carved from a cliffwall in Ticao Island, Masbate.
Face Cave and vagina.......20 footer cave with a face ...and 2 feet carved vagina on its forehead.
9) Eagle Rock.........a 50 ton rock boulder was carved into eagle (wings/beak) with 5 feet X mark carved by circular saw.
10) A Huge Japs carved LAPIDA (2ft. by 4 ft.)......carved with japanese character on top of the cave in Montalban, Rizal
11) 5 feet CLOCK....carved into 150 feet high cliffwall...MOntalban, Rizal.
Those are just examples of our JAPS MARKER collections (I never included the smaller ones, only the bigger ones)...well defined...well carved, even a 5 yr old kid can identify it from a far.....