Backpacker crossing a stream on pebbles. Lake Clark National Park, Alaska http://www.terragalleria.com/mountain/mountain-image.lacl11055.html Hiker crossing a stream next to Lake Turquoise. Lake Clark National Park, Alaska http://www.terragalleria.com/mountain/mountain-image.lacl11031.html Jumping over a small stream next to Lake Turquoise. Lake Clark National Park, Alaska http://www.terragalleria.com/mountain/mountain-image.lacl11030.html Man filtering water from stream, John Muir Wilderness. Kings Canyon National Park, California http://www.terragalleria.com/mountain/mountain-image.usca39836.html Backpacker balancing herself while crossing a stream. Lake Clark National Park, Alaska http://www.terragalleria.com/mountain/mountain-image.lacl11054.html Backpackers cross a stream, Lost Coast. California, USA http://www.terragalleria.com/california/picture.usca10027.html Hiker on tiny footbrige above stream, Tennessee. Great Smoky Mountains National Park, USA. http://www.terragalleria.com/parks/np-image.grsm6813.html Woman crossing stream on rocks, John Muir Wilderness. California, USA http://www.terragalleria.com/california/picture.usca39837.html Hikers wading, Oneonta Gorge. Columbia River Gorge, Oregon, USA http://www.terragalleria.com/america/oregon/columbia-river-gorge/picture.usor37595.html Hikers dwarfed by the walls of Wall Street, the Narrows. Zion National Park, Utah, USA. http://www.terragalleria.com/parks/np-image.zion8615.html Hikers crossing a stream next to Lake Turquoise. Lake Clark National Park, Alaska http://www.terragalleria.com/mountain/mountain-image.lacl11032.html Hikers crossing stream on rocks at Long Lake, John Muir Wilderness. Kings Canyon National Park, California http://www.terragalleria.com/mountain/mountain-image.usca39826.html