Viejas Mountain, Mountain summit in Cleveland National Forest, San Diego County, United States.

Viejas Mountain is a broad, rounded peak of bare tan and ochre earth and rock in Cleveland National Forest, about 3 miles northeast of Alpine in San Diego County. It rises to 4,189 feet (1,277 m), the 48th tallest peak in the county, and its steep flanks are creased by branching ravines and ridges that radiate toward the domed summit.

Viejas Mountain lies in Cleveland National Forest, about 3 miles northeast of Alpine in San Diego County. The sources record no ceremonial use, stone arrangements or summit shelter; the mountain is documented as a 4,189-foot peak, the 48th tallest in the county, visible from parts of metropolitan San Diego.

The mountain lies within Cleveland National Forest, about 3 miles northeast of Alpine. Its name, Viejas, is Spanish for "old women," a name shared with the Viejas Band of Kumeyaay Indians, whose reservation sits nearby. The peak is visible from parts of metropolitan San Diego.

Hikers need to display an Adventure Pass when parking at Anderson Fire Road and should bring adequate water for the unmaintained 2.9 kilometer trail. The path can be exposed and unshaded, so proper preparation is important.

Viejas Mountain reaches 4,189 feet, making it the 48th tallest peak in San Diego County, and it can be seen from parts of metropolitan San Diego. Its summit lies about 3 miles northeast of Alpine, within Cleveland National Forest. The mountain rises roughly 708 metres above the surrounding terrain, and its base spans about 7.6 kilometres.