I’m always screaming about this “dating” bit with the same logic. In 1989, I was on a lonely road in Virginia, got out and with real mason tools, carved 1789 and initials in an old boulder just a bit off the road....I would love it if someone defined the initials and date someday...and it got a big write up.
Stones are very hard to date directly. They are likely dating them from the layer they are imbedded in. If you look at the positions and how they were documented and found, you could make a determination if they had a good case or not.
A lonely road in Virginia is pretty vague. Perhaps it could be discovered if you were more specific.
I live near many many lonely roads in Southwest Virginia and might be the discoverer if pointed in the right direction.
Would that be cheating?