ORO means Gold as most know, also it means 45* the upside down U is something covered(one meaning). I would measure the turtle and multiply by five for the distance to go. I'm not there to see everything but you have a start. Rocky
I think someone's pissing on your leg and calling it rain.
The carving's text: why say GOLD? Also, the style looks way too modern - as in "very recent". The symbols below the text are classics from any number of "treasure hunting signs" publications. My guess: hoax.