Medano Pass was likely the historic route used by Zebulon Pike in January 1807 as he led an expedition to explore this region. Today Medano Pass is primarily traveled by 4WD vehicle, on a rough 22-mile road connecting Great Sand Dunes with the Wet Mountain Valley and Colorado State Highway 69. Passable only in the warmer months and only with high-clearance 4-wheel-drive vehicles, it gives access to Medano Pass (elevation 10,040’) and Great Sand Dunes National Preserve.
Just above the dunefield are woodlands of pinon and ponderosa pine, and subalpine aspen and conifer forests. The easiest hiking access to forest in the national park is in Mosca Pass, on the Montville Nature Trail and Mosca Pass Trail. On these trails, you are walking in the footsteps of Pleistocene mammoth hunters, indigenous tribes, diverse settlers, American explorers, and 19th century African American Buffalo Soldiers.
Sand Creek Basin is part of the alpine watershed of Great Sand Dunes National Preserve. A longer drive and hike is required to reach these lakes and peaks, but the mountain scenery is worth the effort. Check with a ranger for conditions before travel. Snow may block these trails from November into June.
The centerpiece of Great Sand Dunes National Park and Preserve is the 30-square-mile (78-square-km) dunefield, featuring the tallest dunes in North America. Because there are no trails, you can venture out anywhere you'd like to discover unusual insects, plants, wildlife tracks, ripples, and sand grains of every color. In warmer months, watch for one of 7 species of endemic insects, found nowhere else in the world, that are specially adapted to the extreme environment here.
