In the shady campgrounds of Yosemite valley, climbers carved out a counterculture lifestyle of dumpster-diving and wild parties that clashed with the conservative values of the National Park Service. And up on the walls, generation after generation has pushed the limits of climbing, vying amongst 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.

In the middle of Yosemite National Park towers El Capitan, a huge block of granite whose smoothest side, the Dawn Wall, is said to be the most difficult rock climb in the world. Tommy Caldwell didn’t see inhospitable terrain, but rather a puzzle almost a kilometer tall. In The Dawn Wall, we follow him and Kevin Jorgeson in their historic ascent to the summit.