This file is a stereogram. Stereograms are stereoscopic images or animations which combine left and right frames showing slightly different visual angles to allow for 3D perception. 3D red-cyan glasses are recommended to view this image correctly.

This 3D image requires RED-CYAN plastic or paper glasses to see 3D stereo effect. Historical note:Grand Canyon National Park, Arizona. Major Powell's famous armchair boat on the Colorado River. August 22, 1872. USGS Earth Science Photographic Archive digital file: hjk00856

Summary edit

Historical U.S. government photo from USGS files. Public domain.

Licensing edit

	This work is in the public domain in the United States because it is a work prepared by an officer or employee of the United States Government as part of that person’s official duties under the terms of Title 17, Chapter 1, Section 105 of the US Code. Note: This only applies to original works of the Federal Government and not to the work of any individual U.S. state, territory, commonwealth, county, municipality, or any other subdivision. This template also does not apply to postage stamp designs published by the United States Postal Service since 1978. (See § 313.6(C)(1) of Compendium of U.S. Copyright Office Practices). It also does not apply to certain US coins; see The US Mint Terms of Use.
This file has been identified as being free of known restrictions under copyright law, including all related and neighboring rights.

https://creativecommons.org/publicdomain/mark/1.0/PDMCreative Commons Public Domain Mark 1.0falsefalse