Mountain Spring, San Diego County, California

Mountain Spring is a locale within Mountain Springs County Park in eastern San Diego County, California. It is located at an elevation of 2,431 feet (741 m). It is the site of Mountain Spring, now enclosed in a concrete walled pool where it emerges from the mountainside and its waters percolate down a vegetated arroyo toward a culvert that carries water under Interstate 8 toward Myer Creek, and the head of In-Ko-Pah Gorge.