[Tagging] Feature Proposal - Voting - Couloir 2
Bert -Araali- Van Opstal
bert.araali.afritastic at gmail.com
Fri Feb 19 00:20:52 UTC 2021
Gully or gorge = created by flowing water or ice, also applicable for desert
Couloir = similar appearance but not created by erosion but by other
phenomena which only appear in mountains.
Added by a complete novice in this matter but understood from the rather
technical description in the proposal.
On 19/02/2021 03:11, Kevin Kenny wrote:
>
> On Thu, Feb 18, 2021 at 6:29 PM Joseph Eisenberg
> <joseph.eisenberg at gmail.com <mailto:joseph.eisenberg at gmail.com>> wrote:
>
> Re: " A couloir is a narrow gully with vertical sides (usually of
> rock) and a steep slope. Around here, the usual term is 'rock
> chute' rather than 'couloir', but the terms are nearly synonymous.
> Not every gully is inclined enough, or has enough gradient, to be
> called a couloir or rock chute. Where does the couloir end and the
> talus begin? Where there are no longer walls on either side.
> Which means that there's no longer a gap to be loaded with snow in
> a crosswind, so you tend to get very different ice conditions."
>
> Thank you, Kevin. That is the sort of explanation I was looking
> for, from the proposal author or other proponents.
>
> If the tag is defined to be:
>
> "a small, narrow gully or valley between near-vertical rock
> cliffs, which is steeply inclined upward"
>
> That could be a definition that is specific enough to be used.
>
> However, I get the impression that a small, steep stone canyon in
> a desert (e.g. Utah, Arizona) would not necessarily be called a
> Couloir or "rock chute" if it is never covered in stone or ice. Is
> that correct?
>
> Does a couloir need to have a snow-covered portion during the cold
> season? All the example images seem to have snow filling the "chute."
>
> 1) Is this gully a
> couloir: https://www.americansouthwest.net/california/death_valley/golden-canyon-gully_l.html
>
> 2) What about these
> gullies: https://cdn2.apstatic.com/photos/climb/105848296_medium_1557863064.jpg
>
> 3) Or this steep slot
> canyon: https://www.roadtripryan.com/go/resources/content/utah/moab/sgr-canyon/user-submitted/xryancornia-1488896313480.jpg.pagespeed.ic.VxV1KW4RTx.jpg
>
>
> I'd call all of those rock chutes. I've only ever seen the term
> 'couloir' in common use when there's ice and snow about, but I'm not a
> desert hiker. Any rock chute in the Northern US is going to be choked
> with snow in the winter.
>
> I'd also call #3 a chimney, which is (pretty much) a rock crack that's
> big enough to get your whole body into and climb with friction holds
> on the two walls. (The walls need to be nearly parallel for this to
> work, otherwise, it will be off-width at some point.)
>
> https://youtu.be/5dzsWXicn-o?t=301 is a couloir in summer, I suppose.
> It's crazily dangerous in winter. It's mapped
> at https://www.openstreetmap.org/way/493353882 just as bare_rock with
> cliffs on either side.
> --
> 73 de ke9tv/2, Kevin
>
> _______________________________________________
> Tagging mailing list
> Tagging at openstreetmap.org
> https://lists.openstreetmap.org/listinfo/tagging
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.openstreetmap.org/pipermail/tagging/attachments/20210219/22693d45/attachment-0001.htm>
More information about the Tagging
mailing list