In the shady campgrounds of Yosemite Valley, climbers carved out a counterculture lifestyle of dumpster-diving and wild parties. And up on the walls, generation after generation has pushed the limits of climbing, vying among each other for supremacy on Yosemite's cliffs. Valley Uprising is the riveting, unforgettable tale of this bold rock climbing tradition in Yosemite National Park: half a century of struggle against the laws of gravity -- and the laws of the land.