Grizzly Peak is a high and prominent mountain summit of the Collegiate Peaks in the Sawatch Range of the Rocky Mountains of North America. The thirteener is located south-southwest (bearing 202°) of Independence Pass, Colorado, United States, on the Continental Divide separating San Isabel National Forest and Chaffee County from White River National Forest and Pitkin County. Elevation Grizzly Peak is the highest summit in the United States less than , making it the highest thirteener in the country. At one time, the peak's elevation was measured to be over 14,000 feet and was believed to be a fourteener, but more recent and accurate surveys have dropped it below that threshold. Geology The mountain is composed of andesite lava flows and breccias of Oligocene age. Historical names Grizzly Mountain Grizzly Peak Other summits with same name Grizzly Peak is not only the name of Colorado's highest thirteener, but the state has four other Grizzly Peaks plus one Grizzly Mountain on the list: See also List of mountain peaks of North America List of mountain peaks of the United States List of mountain peaks of Colorado References External links Mountains of Colorado Mountains of Chaffee County, Colorado Mountains of Pitkin County, Colorado North American 4000 m summits Great Divide of North America