Nice and very twisty road to the foot of the mount Elbrus (Dzhily-su).
The road rises up to 2500-2600 m above sea.
Multiple viewpoints close to the road — don't hesitate to turn upside dirt roads to reach viewpoints.
Be careful during overtakes — there are police control.
Few cafe with local kitchen (only cash is acceptable)

No gas stations (90 km in one direction + increased fuel consumption due to the height)