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The Mountain Quarries had a switchback just out of view behind me in this image. The upper trestle, number three, has been completely filled and paved. Upon close scrutiny, a small portion of the upper abutment and a pier or two can be found. Both abutments for Trestle 4 still exist. From here to Trestle five, the entire roadbed has been wiped off the face of the earth.