Fandango Pass is a high mountain pass at an elevation of 6,135 feet (1,870 m) above the sea level, located in the Warner Mountains of Modoc County, California, USA.
The pass, also known as Lassen Pass, Lassen Cut-off, Lassen Horn or Lassen's Pass is located in the Modoc National Forest and is crossed by a well maintained gravel road connecting Hwy 395 with Fort Bidwell. The pass marks the convergence of two famous pioneer trails, the Applegate Trail and the Lassen Trail.
The road over the pass is gravel and sand. It’s called Fandango Pass Road or Modoc County Road 9, and the trail climbs steeply to reach the pass, gaining about 1,600 ft (490 m) in about 2 mi (3.2 km). From U.S. Highway 395, six miles south of the Oregon State line, a good gravel road proceeds along the meadows of Fandango Valley and up to Fandango Pass, overlooking Surprise Valley. The road, as it switchbacks down to the Valley, crosses the Applegate / Lassen route of the California National Historic Trail a number of times. But there were no switchbacks for the wagons of the pioneers and the fact that the trail traces come straight up a mountain so steep is almost unbelievable.