Visit this link at the Idaho Parks and Recreation Website
Trail Detail
Big Southern Butte
In southern Idaho near Craters of the Moon National Monument, a huge whale of a mountain lurks out in the desert. It’s called Big Southern Butte (elevation 7,560 feet). According to the Bureau of Land Management, it’s one of the largest volcanic domes in the world, and one of the youngest, at only 300,000 years old. The BLM and the Lost Valley ATV Club put together a route and a map of the 68-mile route, starting and finishing in Arco, Idaho. Start in the Arco City Park, and follow the signs to head out into the desert for 18 miles to the first junction. Turn left and ride over Sunset Ridge to the base of Big Southern Butte. Follow the summit road five miles to the top of the mountain. Retrace your tracks to return to Arco, or take the long way back around Quaking Aspen Butte. You may want to carry extra fuel on this ride depending on the range of your vehicle on one tank of gas. Bring plenty of food and water. No services. Try to visit this area when it’s not too hot … because there is no shade on the ride.
