I have several thoughts. If you notice the large rock formation points to the left. ( You can go that direction to see if there are any other pointer stones.)
You small rock has two rocks cemented on top. These are known as gun sites. If you look at the one to the top side, it lines up with the pointer on the left top of the boulder. You might line up both gun sites to see if they point toward another rock or object. Then move on from there.
The T with the drop down arms, at the bottom, circles around and goes behind the T. If you look on your big rock formation picture, behind the formation you can see another pointer boulder. I believe that is what you are supposed to do. Go left around the big formation and probably back to the other rock and follow the trail.
The A, depending on how genuine it is, indicates a treasure. I would be using a metal detector in and around this area. There is probably nothing right there, but somewhere in the general vicinity. You probably need to follow the big rock in back.
Ecominer