Do you mean 6 inches wide by 8 inches deep. or do you mean you found a drill hole that is about 6 to 8 inches deep. Just trying to understand so that I don't mis understand.
found 2 drill holes they are 6" wide and 8"deep both are the same size approx 4 miles apart drilled in huge stone in ground. one is few hundred yards from padre carved face in other post.