Mark 60,because of the triangle shape of the drill hole and the initial's above tells me that you have found the west set of mark's, I would look East 400 to 700 feet, should be a lot carved boulders in the area look for a slice of pie shape boulder ( triangle ), it should be in the South East corner, should be three total corners, if its a true triangle and the North East corner should have, Kinda interesting. The distances between the corner's will be 189.5 feet or 1/2 or 95 feet, measure everything and get the compass degrees. The one I found Had a O RO which indicated O = 15 th book of the Bible OR = two or second Chapter, verse 15 and 18 information available 454 grams = 1 pound, 112 = # of bars. Took awhile on this. 1814 or a Date was available 1 st book or Geneses chapter 8 and the other was the depth in CM I believe it was 7 ft 7 inches deep, the hole I found was 7 ft X 7 across and the dirt was in a ring around the hole. The Spanish carried a 12 foot rock bar with them to center the hole I've only seen one, pretty hefty piece of iron, with 6 sides, I worked on this on and off for 16 years.