The geographical feature associated with the San Andreas Fault is a transform fault, which is known for its significant seismic activity. Located in California, this fault marks the boundary between the Pacific Plate and the North American Plate. It is infamous for its potential to generate devastating earthquakes, including the 1906 San Francisco earthquake. The fault stretches about 800 miles and is closely monitored by scientists to track movement and assess earthquake probabilities, making it critical for understanding tectonic dynamics.