Cottonwood Trailhead

Downey area trailhead for snowmobiling and ATV riding. Plowed parking area. SNOWMOBILING: View Idaho Parks & Recreation’s FREE Interactive Southeast Idaho Snowmobile Trail Map on EVTRAILS with real-time grooming information! Zoom into the area you are interested in, click the trail and print the map or save it as an interactive PDF on your smart phone! SUMMER TRAILS – ATV, MOTORBIKE, HORSES ETC: View our ArcGis Interactive ATV Map

When to go: Summer and Fall typically offer the best window.

Vehicles: ATV, Snowmobile, UTV. Standard offroad prep applies: appropriate tires, ground clearance, and a basic recovery kit.

Upper Snake context

The Upper Snake wraps western Yellowstone — Island Park's caldera, the Targhee Forest, and the Teton Valley. Wildlife density is among Idaho's highest (grizzly, wolf, elk, moose), so bear-aware practices are baseline. Many drainages have seasonal wildlife closures. Rexburg, Ashton, and Driggs are the bases.

Best for drivers who understand their vehicle and the cost of a mistake in remote country.