It may not have the name recognition of the San Andreas fault, but San Diego’s Rose Canyon fault is still capable of inflicting heavy damage, according to a new assessment by local researchers. The Rose Canyon fault cuts through La Jolla into downtown San Diego, running beneath heavily populated areas with lots of older buildings. The local chapter of the Earthquake Engineering Research Institute, EERI, has been studying what the effects of a magnitude 6.9 earthquake would be along this fault line.