Autumn has arrived in Yosemite Valley. The iconic National Park, with its soaring granite walls and untamed wilderness is on fire. The low humidity of autumn draws rock climbers from all over the world; and simultaneously exposes the fragility of the wild ecosystem. Climbers band together to play in the park, and to act as responsible stewards to preserve its future. Come see familiar sights as well as hidden treasures and remote vistas in America's very first land designated for national protection.