Tiffany Mountain, at 8,245 feet, is the highest summit in the Tiffany Range of Washington’s Okanogan Range, east of the Cascade crest, with runoff flowing into tributaries of the Columbia River. It was named for Will Tiffany, a relative of the Tiffany jewelers of New York and one of Theodore Roosevelt’s Rough Riders, who kept a camp at the mountain’s base and died in Cuba in 1898 during the Spanish–American War. The mountain rises from a North Cascades landscape formed by volcanic activity, terranes, uplift, faulting, and repeated Pleistocene glaciation, while Pacific weather patterns bring snowy winters and clearer summers.