It is best known for being the closest point to the epicenter of the 1906 San Francisco earthquake , and where the San Andreas Fault enters the San Francisco Peninsula from the northwest . An additional minor fault , the Mussel Rock Fault , was identified in 2000 . The area above Mussel Rock consists of steep cliffs with frequent landslides , threatening homes in a subdivision above . The adjacent area is a city park
1906 San Francisco earthquake
1906 San Francisco earthquake
Mussel Rock