Yosemite National Park has been inspiring people since before the park's inception. The enormously deep Yosemite Valley is filled with huge waterfalls pouring over the granite cliffs. These same cliffs attract climbers and general travel enthusiasts alike, while the entire area is ripe with hiking for all skill levels. The park was also an infinite abundance of creativity and inspiration for John Muir, who helped pioneer and further and the national park idea.