OLD RIDGE ROUTE
-Old Ridge Route
https://www.academia.edu/32134611/FIELD_OLD_RIDGE_ROUTE_-_SAN_FRANCISQUITO_CANYON_-_SAN_ANDREAS_FAULT_2000_EDITION
-Old Ridge Route
https://www.academia.edu/32134611/FIELD_OLD_RIDGE_ROUTE_-_SAN_FRANCISQUITO_CANYON_-_SAN_ANDREAS_FAULT_2000_EDITION