I saw some mountains ( Himalaya, Korea, Africa) in Bing maps.
There are practically no ways, no cities.
The only possibility to draw something in OSM is, based on Bing, except of rivers are Пик и хребет.
we have already: natural=peak
I suggest also the use of: natural=ridge for хребет of mountains.
It´s often very good visible and could be helpful in visualisation.