Great Sand Dunes National Park topographic map

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About this map

Name: Great Sand Dunes National Park topographic map, elevation, terrain.

Location: Great Sand Dunes National Park, Saguache County, Colorado, United States (37.66273 -105.72821 37.92629 -105.49781)

Average elevation: 8,583 ft

Minimum elevation: 7,520 ft

Maximum elevation: 13,451 ft

In 1848, John C. Frémont was hired to find a railroad route from St. Louis to California. He crossed the Sangre de Cristos into the San Luis Valley in winter, courting disaster but proving that a winter crossing of this range was possible. He was followed in 1853 by Captain John Gunnison of the Corps of Topographical Engineers. Gunnison's party crossed the dune field on horseback.

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