Grand Teton, the highest peak in the Teton Range and second-highest in Wyoming, rises within Grand Teton National Park as a geologically young mountain shaped by uplift beginning about 9 million years ago and later glaciation. Its name gradually replaced earlier usages, becoming firmly established through maps and the national park. The peak has long been central to American mountaineering, with its first ascent still disputed, though the 1898 climb by Franklin Spalding, William O. Owen, Frank Peterson, and John Shive is accepted as certain. Celebrated climbing routes and landmark ski descents have made Grand Teton one of North America’s most influential and recognizable mountains.