A fire consumed 20 acres of vegetation in Pleasanton Sunday afternoon before being extinguished.
Local emergency responders said the fire was reported shortly before 4:30 p.m. Sunday off of Dublin Canyon Road and Schaefer Ranch Road.
Cal Fire, paramedics and fire departments of the East Bay Regional Park District responded to the scene.
The fire was contained at 20 acres. No structures were threatened and no injuries were reported, according to the Alameda County Fire Department.
Firefighters determined the incident was a result of heavy equipment coming in contact with a rock.