A Landscape Reclaimed
Located near Arvada, Colorado, the South Entrance offers a gateway to a unique recovery story. Once a site of significant Cold War history, this rolling prairie is now a protected sanctuary. It serves as a vital corridor for migrating wildlife and offers visitors a chance to witness nature's resilience firsthand.
Trail Network
Woman Creek Loop
3.0 Miles • Moderate Loop
A moderately challenging hike featuring rolling terrain and striking views of South Woman Creek. The surface is primarily dirt, offering an authentic prairie experience.
South Woman Creek
0.4 Miles • Connector
A shorter path that connects with the larger loop. Ideal for extending your hike or for a quick, accessible walk to view the grasslands.
Permitted Uses
- Hiking
- Bicycling (Class 1 E-bikes)
- Horseback Riding
- Snowshoeing / Skiing
- Photography
A Complex Legacy
The peacefulness of the refuge contrasts with its past. From 1952 to 1992, the Rocky Flats Plant manufactured nuclear weapons components here. Following an extensive EPA-supervised cleanup, the buffer zone was established as a National Wildlife Refuge in 2007, while the central industrial area remains under Department of Energy management and is closed to the public.
Wildlife Haven
The refuge protects a globally rare xeric tallgrass prairie ecosystem. It is home to a diverse array of species that visitors may be lucky enough to spot.
Refuge Rules
To protect the wildlife and the history of this land, please adhere strictly to these regulations.
Stay on Trails
Off-trail travel is prohibited to protect sensitive habitats.
No Pets
Dogs and other pets are not allowed. Service animals only.
Leave No Trace
Pack out all trash. Do not collect antlers, plants, or artifacts.
Sunrise to Sunset
Day use only. No overnight camping or parking.
Prohibited Items
No fires, grilling, or drones allowed at any time.
No Restrooms
There are no facilities at the South Entrance. Plan accordingly.