Major Earthquakes and Fault Zones of California--Shaded relief map showing earthquakes and fault zones across California from a unique oblique perspective. Use this map to teach and learn about the relationship of earthquakes, faults, landforms, and population centers. The fault zones shown have been selected to illustrate that, although the San Andreas is California's longest active fault and has produced some of the State's largest earthquakes, it is not the only active fault in California. Base map reprinted with permission of Unique Media Incorporated. Map size 27" x 18".