Grand Canyon Trail of Time
Marker at the beginning of the Grand Canyon Trail of Time
Originally uploaded in Cutting Edge:Topics:Rates and Time.
Image 27465 is a 349 by 325 pixel JPEG
Last Modified: 2011-03-18 13:16:48
The file is referred to in 1 page
National Park Service photo by Michael Quinn
This item is in the public domain
and maybe reused freely without restriction.