Mappa topografica Great Sand Dunes National Park

Mappa interattiva

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A proposito di questa mappa

Nome: Mappa topografica Great Sand Dunes National Park, altitudine, rilievo.

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

Altitudine media: 2’616 m

Altitudine minima: 2’292 m

Altitudine massima: 4’100 m

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 dunefield on horseback.[11]