The San Diego Association of Geologists organize an annual field trip.
This year the field trip explored the interaction of the major faults of Southern California. Touring by bus, they stopped to explore the physical location of fault lines and examine the resulting geology formations. They took a break at the museum for lunch, catered by the Jacumba Spa, and listened to Professor Norrie Robbins, adjunct professor at San Diego State University, give a talk on the complex relationship between native cultures and geological fault lines. You can find out more about the SDAG and their field trips on their website: http://www.sandiegogeologists.org/