Overland Mail Route
This pass, Puerta, between the desert and the cooler
valleys to the north, was used by the Mormon Battalion,
Kearny's Army of the West, the Butterfield Overland Mail
stages, and emigrants who eventually settled the West.
The eroded scar on the left was the route of the Butterfield
stages, 1858-1861. The road on the right served as a county
road until recent years.
Plaque placed by the California State Park Commission in cooperation with The Sierra Club of California, San Diego Chapter, October 6, 1958.