https://creativecommons.org/publicdomain/zero/1.0/https://www.rawpixel.com/image/14291272Edit ImageSaveSaveEditCropCustom TextBoulders. This canon is 140 1/2 miles in length and from 300 to 3,000 feet deep. [Colorado River. Glen Canon] by James H FennemoreOriginal public domain image from Getty MuseumMorePublic DomainFree CC0 image for Personal and Business useInfoView CC0 LicenseJPEGSmall JPEG 1200 x 767 px | 300 dpiLarge JPEG 3500 x 2238 px | 300 dpiBest Quality JPEG 6560 x 4195 px | 300 dpiFree DownloadBoulders. This canon is 140 1/2 miles in length and from 300 to 3,000 feet deep. [Colorado River. Glen Canon] by James H FennemoreMore