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aerial photograph San Bruno Mountain, South San Francisco, San Mateo County, California in spring.  One of the trailheads to San Bruno mountain is located at at the right, trail switchbacks run along the northern side of the South San Francisco The Industrial City sign.
aerial photograph San Bruno Mountain, South San Francisco, San Mateo County, California in spring. One of the trailheads to San Bruno mountain is located at at the right, trail switchbacks run along the northern side of the South San Francisco The Industrial City sign.