Opening Hours
Daily: 10 A.M.–5 P.M.
Closed on Tuesdays
1151 Oxford Road
San Marino, CA 91108
Visual Materials
Daily: 10 A.M.–5 P.M.
Closed on Tuesdays
1151 Oxford Road
San Marino, CA 91108

Visual Materials
Big Creek - Mammoth Pool - Drilling for diversion tunnel intake, showing Jumbo in place.
photCL SCE 06 - 45158

Visual Materials
Big Creek - Mammoth Pool - Drilling high bottom at diversion tunnel intake portal.
photCL SCE 06 - 45176

Visual Materials
Big Creek - Mammoth Pool - Drilling high bottom at diversion tunnel intake portal.
photCL SCE 06 - 45177

Visual Materials
Big Creek - Mammoth Pool - Construction of diversion tunnel Jumbo
photCL SCE 06 - 45115

Visual Materials
Big Creek - Mammoth Pool - Construction of diversion tunnel Jumbo
photCL SCE 06 - 45116

Visual Materials
Big Creek - Mammoth Pool - Drilling access road to Intake Portal of Diversion Tunnel.
photCL SCE 06 - 45075