Great Sand Dunes
National Park & Preserve Colorado



2018 Calendar of Events

More events will be added as they are confirmed!
College Girl remotely operating a sand robotic rover
Numerous groups compete with their own sand rovers while learning about the technology of NASA's Mars Rovers.

NPS/Patrick Myers

Saturday, April 14, 8:00am-11:30am

Sand Robotics Challenge, Sponsored by NASA and Adams State University

Great Sand Dunes are very similar to the dunes on planet Mars, where NASA rovers explore and do scientific research. Each spring, NASA and Adams State University sponsor a sand robotics challenge, where college student teams and the general public can compete with their own homemade rovers and learn about the technology of Mars rovers! The competition takes place in the Medano Creekbed, outside the designated wilderness area of the dunefield. Learn more on the Colorado Space Consortium's website. Free entrance to the park this day!
Amphitheater at Night During Ranger Program
Summer evening ranger programs are popular for all ages!

NPS/Graham Oden

Friday, May 25 - Saturday, September 29

Summer Ranger Programs

Evening programs or night hikes will be offered on most weekends in the summer at the outdoor amphitheater. Afternoon programs on weekends and some weekdays will allow visitors to learn more about the unique resources of Great Sand Dunes. View the current ranger program schedule.
View of Visitor Center with Mountains in Background
Great Sand Dunes Visitor Center

NPS/Patrick Myers

Friday, May 25 - Monday, September 3

Extended Visitor Center Hours

Great Sand Dunes will offer extended visitor center hours starting Friday, May 25 through Labor Day weekend. The visitor center will be open daily from 8:30am to 5pm.
Family birdwatching in forest
Birders of all ability levels are welcome on this hike in the forest of Mosca Pass Trail.

Saturday, July 28

Free Guided Bird Walk along Mosca Pass Trail

Celebrate the Year of the Bird! Join Dr. Tim Armstrong of Adams State University for a morning guided walk along the Montville Nature Trail to learn about the species of birds that call Great Sand Dunes home. Meet at the visitor center at 8:00 a.m. for a 2 hour walk. Please call the visitor center at 719-378-6395 to register by July 27; group size is limited to 10 people. Bring water and binoculars.

Kids Jumping with Ranger
Kids do the kangaroo rat jumping race on Junior Ranger Day!

NPS/Patrick Myers

Saturday, August 4, 9 am – 1 pm

Junior Ranger Day

Junior Ranger Day is an opportunity for kids of all ages to participate in exploratory activities at the South Ramada picnic area, adjacent to the Dunes Parking Area. Participants will have the opportunity to earn prizes after completing a variety of activities. This event is made possible with generous support from Friends of the Dunes and the staff and volunteers at Great Sand Dunes. Free entrance for all visitors this day!
Mountain Man Reeenactor Walking in a Meadow
Mountain Man Living Historian Jack Rudder

courtesy Jack Rudder

Saturday, August 11, 11:00 am - 3:00 pm

Celebrating Cultural Experiences in the San Luis Valley: Mountain Man Encampment

In the 1700s, "Mountain Men" were some of the earliest known people of European descent to live in the San Luis Valley. They had to be savvy and rugged, able to negotiate with American Indians, soldiers, and settlers while living off the land in the remote Rocky Mountain backcountry. San Luis Valley historian, Jack Rudder, will create a mountain man encampment at the visitor center, with numerous items that would have been used by mountain men in this area. Stop by and discover this little-known part of San Luis Valley heritage!

Buffalo Soldier Reenactor
Buffalo Soldier Reenactor Jay Clark

Photo: Haley Eboma, courtesy Fort Larned National Historic Site

Saturday, August 18, 11:00 am - 3:00 pm and 7:00 pm - 8:00 pm

Celebrating Cultural Experiences in the San Luis Valley:
Buffalo Soldiers Living History

Few realize that African American Buffalo Soldiers from the US Army patrolled the Great Sand Dunes area 140 years ago. Based at nearby Fort Garland, these soldiers sometimes faced prejudice, yet courageously and sometimes heroically served their country while protecting area settlers and American Indians. Stop by the visitor center this Saturday, August 18, between 11am - 3pm to visit with Buffalo Soldier reenactors with encampment gear, and learn about their life on America's frontier. There will also be a more formal presentation from 7pm to 8pm at the park Amphitheater. Discover this little-known part of San Luis Valley heritage!

Star Party Silhouettes


Saturday, September 8, 8:30 pm

Amateur Astronomy Night

Astronomers of all levels are invited to Great Sand Dunes to share their time and telescopes to engage the public with unique astronomy experiences. Participate in telescope viewings of deep space objects, planets, and other unique celestial objects from a variety of scopes. Visitors are invited to bring their own telescope and share their knowledge, experience and passion with visitors, alike. Warm clothing, rain gear, head lamps with red lights, and sturdy shoes are recommended.
Man leading a birding walk in forest
Joe LaFleur is a leading expert on Colorado birds.

Saturday, September 15, 4:00-5:00 pm

Guided Bird Walk along Mosca Pass Trail

Celebrate the Year of the Bird with a free guided birding hike along Mosca Pass Trail. Join Joe LaFleur for a free guided bird walk that features hands-on identification of migrant and resident birds in habitats including forest, creek and meadow. Beginners are welcome, ages 10 and up; bring binoculars and good walking shoes. Please call the visitor center at 719-378-6395 to register by September 14; group size is limited to 10 people.

Abstract painting in turquoise and red colors
'Marble 1' - mixed media on canvas, by Paula Jo Miller
Saturday, October 6, 2:00-4:30pm

Abstract Painting Workshop with Paula Jo Miller
Painters of all ability levels are invited to a free workshop with Colorado abstract painter Paula Jo Miller. You can bring your own paints and canvas, or materials can be provided at no charge. The workshop will take place at the Great Sand Dunes Visitor Center, with a mix of indoor and outdoor work.

Great Sand Dunes, with their sweeping forms and colors, are abstract art in themselves, so an abstract approach is a natural way to capture the subtle colors and shapes of the dunes and their surroundings.

Class is limited to only 8 participants, so reserve your spot before this workshop fills up! Call 719-378-6343 to leave your information for a callback.

Learn more about Paula Jo Miller's work on her website: .


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Last updated: October 29, 2018

Contact the Park

Mailing Address:

Visitor Center
11999 State Highway 150

Mosca, CO 81146


(719) 378-6395

Contact Us