Stony Pass is a high mountain pass at an elevation of 3.838m (12,592ft) above the sea level, located in southwest Colorado, USA. The pass got its name because of the rocky terrain. It's one of the highest mountain roads of Colorado.
Located in San Juan County, the road over the pass is called Stony Pass Road (Forest Road 520) and continues over the Divide and into the San Juan National Forest where the road designation number changes to Co Rd 3. The road to the summit, located within the San Juan Mountains, is fairly rocky, rough and washed out in parts. Originally an old stage and freight route, this road follows the Rio Grande for many miles.
It’s pretty narrow. The road is closed from mid fall into the start of the summer. Great trail for experienced wheelers. Avoid driving in this area if unpaved mountain roads aren't your strong point. 4x4 required. Stay away if you're scared of heights. Wet conditions may make for tough driving along the muddy road. The summit has lots of wildflowers and small creeks and waterfalls. The road was built in 1872 as a stage route and a major supply line for the mining claims in the area. It was abandoned for a long time until the Forest Service reopened it in the 1950s.