T4T35 has changed the coordonates of the menhir since they have found an article about it, written by a locally known author and published in 1946-49.
I suggest you would change also your coordinates to make them more accurate.
It sounds : The menhir is situated 2,500 km North-North-West of Chézelles and 250 m East of La Fuchard...
Regards
Something is not right. This message is just to keep things from messing up down the road