Solomonska, i believe you are in a "Tax zone", alpha & omega monument thing.
You have to review that "X", if its real & if is something more.
"X", i think have M (black) with dot & maybe number "1" to the right
"X", M probably say distance to "rock map"
.. 3 or 31 or 30(3X) or 10(X) varas (dot) in direction of the head .. dot is on right side of M, so, right side of owl = head (head its black & M too)
In sites of type "Tax zone", with alpha & omega monument, Owl its a common place for rock-map, but in some cases this dig spot is canceling & somehow tell direction or where search rock-map
.. in your site points Owl down to black-M canceling dig spot
Rangler, have right, this its an alpha monument & the "orgy" of signs confirm that, the "omega signs" (its my mistake call it omega monument) say look for a Owl. In other zone you will found a Owl.
Probably this is the owl zone:
View attachment 1125743
.. here search for more signs
.. if you dont find signs & dont get luck search rock-map close to alpha-monument, so, here search for rock-map, M say to the right side
With pictures i can only imagine, the better way is walking over place