About 60 feet above this site, a line of rocks marks the old Trappers and Emigrants Trail from Trinity River to Scott Valley. The route may have been used as early as 1829 by Hudson’s Bay trappers and others before the road was built in 1860. Six miles of original road extended between the American House at the mouth of Tangle Blue Creek and Scott Mountain Summit. This road linked San Francisco and Portland until the railroad through the Sacramento River Canyon was completed in 1888, and the last stage ran this route in 1924.