https://creativecommons.org/publicdomain/zero/1.0/https://www.rawpixel.com/image/14291275![Mirror Water Pocket. This canon is 140 1/2 miles in length and from 300 to 3,000 feet deep. [Colorado River. Glen Canon] by…](https://images.rawpixel.com/image_social_landscape/cHJpdmF0ZS9sci9pbWFnZXMvd2Vic2l0ZS8yMDI0LTAyL2xyL2dldHR5MTA2enZ3LWltYWdlLmpwZw.jpg)
Mirror Water Pocket. This canon is 140 1/2 miles in length and from 300 to 3,000 feet deep. [Colorado River. Glen Canon] by James H Fennemore
Original public domain image from Getty Museum
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