路易士和克拉克在遠征的途中曾經到過這個人稱「落機山脈心臟」的地方

出處: Jackson, William Henry, photographer. "The Heart of the Rockies, Long Lake & Snowy Range near Ward, Colorado." Detroit Publishing Company, copyright 1901. Touring Turn-of-the-Century America: Photographs from the Detroit Publishing Company, 1880 - 1920, Library of Congress.