
Hasn't voted | Two of the three links above reference Hells Canyon as "river-carved," which seems to imply some limiting factor, as though there are deeper canyons that aren't such (whatever cause that might be), but you're saying (Another tall tale is that Hells Canyon along the ID/OR border is the deepest canyon in the world. Truth is, it isn’t even remotely close, no matter how you measure it!) that's not accurate. I'm assuming you're right. What I'd like to know is...what's deeper? And it isn't even remotely close implies a substantial difference...which is how much?
The deepest canyons in the world are in the Himalayas. Besides their height, there is one extremely unusual thing about the Himalayas. They do not form a continental divide. All the rivers in southern Tibet actually cut through the Himalayas. The major rivers cut through canyons around 15,000 feet.
By some measurements the deepest of them all is the Kali Gendaki River Gorge, which is claimed to be 19,000 feet deep. This however isn’t an average depth, but mearly the deepest point. In most places the average depth of the Kali Gendaki is “only” 12,000 feet or so for the 50 mile or so length between Muztang and Tatopani. So, if the average depth of the canyon is only 12,000 feet, where does the 19,000 feet measurement posted in so many books come from? It comes from the measurements of the river bottom between Annapurna and Dhalagiri. The river bottom between the two is at around 8,000 feet. The two summits are only twenty two miles apart summit to summit and are 26,795 feet and 26545 feet respectively. Kind of a weird way of measuring depth if you ask me, but either way the Kali Gendaki is still a very deep gorge and may be the world’s deepest by average depth. Any way you measure it though, it’s still deeper than Hells Canyon by a long shot. It’s quite an impressive hike if you ever get the chance. One of my favorites.
Below is a pretty good photo of the gorge looking down into it from above. Keep in mind that at this point of the photo, Tatopani is at the bottom of the gorge (which is in the shadows and out of sight-the bottom of the gorge can't be seen in the photo, but you get the idea) and at only 3800 feet elevation:
Looking back down into the Kali Gendaki Gorge
Besides the Kali Gendaki the famous rivers slicing through the Himalayas such as the Ganges form gorges 12-15,000 feet deep, depending on the river and on how the depths are measured.
So what do you think about my “not even remotely close” statement? Pretty accurate statement I would say, no matter what way you measure it (which might not be the case with Zion Narrows and Black Canyon).
Interestingly though, like the USA, other countries are quick to get in on the Tall Tale action. South America, like the USA, will ignore the Himalayas, and claim that theirs are the deepest canyons. See some links below:
Cotahuasi Canyon
Cotahuasi Canyon
Cotahuasi Canyon
Colca Canyon
Although a very impressive depths of the Colca and Cotahuasi Canyons are around 11,000 feet deep, it’s still bested by the Himalayas. Obviously though, the two canyons above are both deeper than Hells Canyon, and river carved.
As for the Wind River glacier boast, I'd almost assume the writer of the claim is referencing just the Rockies, and somehow managed to do it only in his/her mind--meaning it came out as a "boast" incompassing the Contiguous U.S. as a whole, including, of course the Cascades, which I've always been told have more glaciers than the Rockies.
Yes, and that’s a good point. A superlative for one area is applied to a much larger area, such as the lower 48 as a whole, or the world as a whole. Such is the case with all the Tall Tales in the article. Once a tall tale gets out there, it is reprinted and used several times. The Wind Rivers claim for example, has been used in guidebooks, coffee table books, tourist websites, and in some Wyoming museums.
It would, however, be interesting to see glacier-area figures for the remaining glaciated areas in the "Lower 48." My understanding is that of the remaining parts of the country with glaciers, the "Big Three," in descending order, are the Cascades, Wind Rivers, and Glacier N.P.
And see the stats you shall. There is a good SP conversation on the matter and with posted stats on the link below when someone else posted the Wind River claim to Summit Post:
Summitpost discussion
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