From the plaque:
One and one-half miles north
of this point stood the Mountain House Station on the
route of the Butterfield Stage. Operating through present
Kern County during 1858-1861, this famous line ran from
St. Louis, Missouri to San Francisco until the outbreak
of the Civil War.
Plaque placed by California State Park Commission in cooperation with Kern County Historical Society, El Tejon Parlor No. 239 N.D.G.W., and the Kern County Museum. October 13, 1957