How to tag this road surface?

OpenStreetMap Questions and Answers
#1

It’s way too coarse for gravel, this kind of road is only accessible for vehicles with massive off-road tires or hikers.

https://www.mapillary.com/map/im/pphv4AVLguH9_TkVFDq1xA

#2

Maybe with surface=earth;stone
See https://taginfo.openstreetmap.org/keys/surface#values

And maybe with a smoothness tag: smoothness=horrible ?
http://wiki.openstreetmap.org/wiki/Key:smoothness

#3

If is only for 4wd vehicles, also tag it with 4wd_only=yes https://wiki.openstreetmap.org/wiki/Key:4wd_only

#4

Thanks for the suggestions!