Looking up from the Red Sentinel route at dawn, Mont-Blanc, Italy. http://www.terragalleria.com/mountain/mountain-image.alps3125.html Looking down from the Red Sentinel route, Mont-Blanc, Italy and France. http://www.terragalleria.com/mountain/mountain-image.alps3127.html Sentinel rock rising above fog on valley in winter. Yosemite National Park, California, USA. http://www.terragalleria.com/parks/np-image.yose20756.html Cathedral Rocks seen from Sentinel Meadow. Yosemite National Park, California, USA. http://www.terragalleria.com/parks/np-image.yose40184.html Dead Jeffrey Pine on Sentinel Dome, sunset. Yosemite National Park, California, USA. http://www.terragalleria.com/parks/np-image.yose20770.html Half-Dome reflected in Merced River near Sentinel Bridge, sunset. Yosemite National Park, California, USA. http://www.terragalleria.com/parks/np-image.yose21293.html Sentinel Pine covered bridge, Franconia Notch State Park. New Hampshire, USA http://www.terragalleria.com/america/new-hampshire/white-mountains-nh/picture.usnh45370.html Inside Sentinel Pine covered bridge, Franconia Notch State Park. New Hampshire, USA http://www.terragalleria.com/america/new-hampshire/white-mountains-nh/picture.usnh45374.html Avalanche Peak and Grand Sentinel raising from Cedar Grove valley. Kings Canyon National Park, California, USA. http://www.terragalleria.com/parks/np-image.kica50018.html Sentinel tree, Giant Forest Museum window reflexion. Sequoia National Park, California, USA. http://www.terragalleria.com/parks/np-image.sequ50113.html Sentinel Rock, Yosemite Valley visitor center window reflexion. Yosemite National Park, California, USA. http://www.terragalleria.com/parks/np-image.yose52615.html Sentinel Beach, Yosemite National Park. http://www.terragalleria.com/studio/picture.sand61313.html Smoke-filled valley and Half-Dome from Sentinel Dome. Yosemite National Park, California, USA. http://www.terragalleria.com/parks/np-image.yose60370.html Half-Dome from Sentinel Dome at night at night. Yosemite National Park, California, USA. http://www.terragalleria.com/parks/np-image.yose60357.html Sentinel group of sequoias, Long Meadow Grove. Giant Sequoia National Monument, Sequoia National Forest, California, USA http://www.terragalleria.com/california/picture.usca67897.html Watchman and Sentinel cinder cones from Echo Crater. Craters of the Moon National Monument and Preserve, Idaho, USA http://www.terragalleria.com/america/idaho/craters-of-the-moon/picture.usid68386.html