To me a canyon is narrow with steep cliffs on either side (a place where you'd go canyoning https://en.wikipedia.org/wiki/Canyoning) and a gorge is much wider and may have less steep sides.... but then you have the Grand Canyon in the US which is wide and less steep sides.
I'd vote for separate tags natural=canyon, etc. Because a valley is very different to a canyon so you'd want to be explicit about this. As an aside, I think route=canyon is good for documenting recreational canyoning routes. On Wed, 14 Aug 2019 at 12:25, Joseph Eisenberg <[email protected]> wrote: > A few months ago we discussed how to tag gorges, canyons and ravines. > These are steep-sided valleys, sometimes with cliffs. > > Myself and at least one other person were in favor of using > natural=valley, + valley=ravine / valley=gorge / valley=canyon. > > However, there is already a non-English wiki page for natural=canyon, and > a new English page for natural=gorge - the author of the gorge page thought > that he would like a single tag, rather than a secondary tag with > natural=valley. > > This would be a little more work for database users, and also you would > have to pick natural=valley vs =gorge/canyon/etc. > > Also, Wikipedia basically says ravine, gorge and canyon are synonyms, > though as an American from the West, I tend to think of canyons as having > vertical, rock cliffs, vs ravines and gorges as less steep, but this may be > a dialectal difference. > > Thoughts on this? > > -Joseph > _______________________________________________ > Tagging mailing list > [email protected] > https://lists.openstreetmap.org/listinfo/tagging >
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