[Tagging] Feature Proposal - Voting - Couloir 2

[Martin Koppenhoefer]

sent from a phone

> On 18 Feb 2021, at 20:56, Joseph Eisenberg <joseph.eisenberg at gmail.com> wrote:
> 
> Unfortunately I don't think this makes it clear when to use natural=gully or natural=couloir.


I had this same impression, as someone not very familiar with the features of mountainous environment, even less in English, it remains mostly opaque what a couloir is, and how it can be distinguished from other, similar features.
I also had the impression, but it could be wrong, that usage or usefulness for mountaineers may be part of the distinction (the same feature, by shape and size, can have a different name if it is dangerous or useful for passing)?

Can couloirs only occur in specific kinds of mountains? What are the preconditions/typical environment/geological conditions?

Cheers Martin