South of Mussel Rock, the fault passes through Daly City and
into watershed land. The highway is Interstate 280, a good drive
for seeing and contemplating this part of the fault. Three small
reservoirs, San Andreas (SAR) and Upper and Lower Crystal
Springs (CSR), lie on the fault trace. The stout earthen dams
holding back these reservoirs held firm in 1906 and are not
considered major hazards. Beyond them, the fault begins to take
a slight leftward bend as it runs behind Black Mountain (BM) and
through the notch directly beyond. Loma Prieta (LP) gave its
name to the 1989 earthquake because the greatest shaking
occurred in the wooded highlands to its west. The bend in the
fault results in compression across it as the Pacific plate on
the right side moves toward the viewer. This thickens the crust
and raises the Santa Cruz Mountains. Similar ranges rise along
fault bends in the central segment and the southern segment. The
next view is looking north at this same section from a point to
the right of the "BM" mar