04-16-2020, 07:37 AM
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Senior Member
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Join Date: Mar 2017
Location: ABQ, New Mexico
Posts: 36,633
Thanks: 3,506
Thanked 136,542 Times in 22,784 Posts
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Black Canyon of the Gunnison is so deep (2,722 feet) that sunlight only reaches the floor for 33 minutes each day. That's how it got it's name, not from the color of the rocks.
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