Hello best b 4, I do not believe that Lost Horse has gleaned all of the information off her map rock ( BOULDER ) I believe that the marble size dots represent 5 leagues or 12.5 miles and may be the distance traveled in a day, On your post yesterday, there's a direction indicator and how high should be distance, I would not expect to see any other marks until you had gone that distance and direction. I really do like the flat top on the top stone, it may indicate royal trail looks to be 33 inches high could be 1 1.2 league or perhaps 2 leagues I think I would check both, All this for the most part is just a guess. If you don't find any sign at either location it may be covered over, anyway I really believe your are on an exciting journey, and Google earth may be a lot of help, if a overhead shot shows a circle in the area it would really get my heart pounding. The map may indicate a distance which could give you the length and width of the canyon