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File:Grand Canyon Trail of Time - Folded Vishnu basement rock.jpg

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The Trail of Time is an interpretive walking trail that focuses on Grand Canyon's vistas and rocks, encouraging visitors to ponder, explore, and understand the magnitude of geologic time and the stories told by canyon's rock layers and landscapes. Walking the trail is intended to give park visitors a visceral appreciation for the magnitude of geologic time... .. This 4.56 km (2.83 mile) long trail is actually a geologic time-line. Each meter on the trail signifies one million years of Grand Canyon's geologic history; and bronze markers mark one meter intervals. Every tenth marker is labeled in millions of years. NPS Photo by Erin Whitakker .

For more information: tot.unm.edu/
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Source Flickr: Grand Canyon Trail of Time - Folded Vishnu basement rock - 0331
Author Erin Whittaker, National Park Service
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This image, which was originally posted to Flickr, was uploaded to Commons using Flickr upload bot on 3 January 2013, 20:21 by Tillman. On that date, it was confirmed to be licensed under the terms of the license indicated.
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This file is licensed under the Creative Commons Attribution 2.0 Generic license.
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Public domain This image or media file contains material based on a work of a National Park Service employee, created as part of that person's official duties. As a work of the U.S. federal government, such work is in the public domain in the United States. See the NPS website and NPS copyright policy for more information.

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current20:21, 3 January 2013Thumbnail for version as of 20:21, 3 January 20134,288 × 2,848 (2.92 MB)Flickr upload bot (talk | contribs)Uploaded from http://flickr.com/photo/50693818@N08/6529430209 using Flickr upload bot

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