RockHopper2 post 1733
To me your rock looks like an arrow head. I think as an Arrow Head it gives direction.
MY hunch would be you now need distance--so is there a chiseled line or letter on your stone?
Or is there a stone marker / Spanish Marker directly in line with the direction it points?
Or another thought that just occurred to me is it did in fact give you direction and distance already--
The direction is not where it points--but to the closest cardinal point--ie N,E,S, W--
The distance is the next stone as you travel on the N. S, E, W --true--line.
These are just some possible ideas I have thrown out which may help you.
Barton