This track (https://www.openstreetmap.org/way/34237534) is tagged surface=dirt ("No special surface, the ground itself has marks of human or animal usage") and tracktype=grade1 ("Usually a paved or sealed surface").  The two tags are contradictory - can someone check which is correct?
https://wiki.openstreetmap.org/wiki/Key:surface
https://wiki.openstreetmap.org/wiki/Key:tracktype