Published December 2, 2009 12:36PM

'Building Thunderstorm above Pyramid Peak and Arrow Peak, from the John Muir Trail - Kings Canyon National Park (Robert Oliver)'

Building Thunderstorm above Pyramid Peak and Arrow Peak, from the John Muir Trail – Kings Canyon National Park (Robert Oliver)

(Isaac Grothe)

Rae Lakes, Kings Canyon National Park, California (Robert Oliver)

For my first ever backpacking experience, I figured there was no better place than Yellowstone. After experiencing vistas like this in the Black Canyon of The Yellowstone, I believe I was correct. (Eric Gendreau)

Chicken Foot Lake Little Lakes Valley – Rock Creek John Muir Wilderness, California (Robert Oliver)