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Closed Sand Dune Areas

Great Sand Dunes National Monument

Great Sand Dunes National Monument
Great Sand Dunes National Monument - closed to vehicles

Location:  Southern Colorado


North America's tallest dunes rise over 750 feet high against the rugged Sangre de Cristo Mountains. 

The main dune field grows to enormous heights not only because of a complex wind regime, but also due to sand carried by Medano and Sand Creeks. These streams seasonally carve out and carry sand from the east and north side of the dunefield and re-deposit it where wind can transport it back to the dune field.

Managed ByNational Park Service


Great Sand Dunes National Monument is located 35 miles northeast of Alamosa,Colorado, reached by US Highway 160 and Colorado Highway 150 from the south. or from Colorado Highway 17 and County Six Mile Lane from the west.


GRSA_map72dpi.jpg (582531 bytes)
Map of the park - click to enlarge

Size: Over 30 square miles

Date of Closure: 1932

Type of Closure: Permanent

Reason for Closure:  Great Sand Dunes National Park and Preserve Act - 1932


Other Photos:

A wide-angle view from the southeast. Photo courtesy of Interactive Earth.

Great Sand Dunes from space Great Sand Dunes from space
Great Sand Dunes from space - click to enlarge


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