Roaring Camp & Big Trees Narrow Gauge Railroad 

The Roaring Camp & Big Trees Narrow Gauge Railroad is a 3 ft (914 mm) narrow-gauge tourist railroad in California that starts from the Roaring Camp depot in Felton, California and runs up steep grades through redwood forests to the top of nearby Bear Mountain, a distance of 3 ¹⁄₄ miles (5.2 km).

Several steam engines date from the 1890s and are some of the oldest and most authentically preserved narrow-gauge steam engines still providing regular passenger service in the United States. (The Cumbres & Toltec Scenic Railroad in Colorado and New Mexico has the oldest steam engines, dating back to 1883.^[1])

The American Society of Mechanical Engineers designated three engines at Roaring Camp and Big Trees Railroad as Historic Mechanical Engineering Landmark #134 in 1988.