Photos:
(1) Yosemite Valley, Yosemite National Park, January 2006.
(2) El Capitan, Yosemite National Park, December 2010.
(3) Arches National Park, July 2004.
(4) Lower Yellowstone Falls, Yellowstone National Park, August 2009.
(5) Narada Falls, Mt. Rainier National Park, August 2013.
(6) Devils Golf Course, Death Valley National Park, December 2008.
