The Red Hills are a mountain range in Tuolumne County, California. Elevations within the Red Hills vary between 750 and 1,750 feet above sea level. Slopes of the hills themselves vary from about 30% to 75%.In 1937 Paramount filmed on location at the Red Hills area the motion picture North of the Rio Grande (1937) starring William Boyd as 'Hopalong Cassidy'. The studio sent a Hetch Hetchy railroad locomotive No.30 to roll through the Red Hills scenic landscape.Red Hills Area of Critical Environmental ConcernThe Red Hills contain the The Red Hills of Tuolumne County Area of Critical Environmental Concern (ACEC), managed by the Bureau of Land Management as an Area of Critical Environmental Concern. The Red Hills Management Area consists of 7,100 acres (slightly more than 11 square miles) of public land located near the intersection of California State Route 49 and California State Route 120, just south of the historic town of Chinese Camp, California in Tuolumne County.The entire Red Hills Management Area has been designated as an ACEC. The purpose of the designation is to protect the rare plant species found there, the unusual serpentine soils that provide habitat for unique flora of the area, habitat for the rare minnow known as the Red Hills roach and to protect bald eagle wintering habitat.
