Natural Features & Ecosystems
Pinnacles National Park gets its name from rock spires and crags that are remnants of an ancient volcanic field, which eroded over millions of years as portions of the field moved northward along the San Andreas Fault. Rock debris in the form of boulders has weathered and settled, leaving behind spires of volcanic rock and talus caves.
Did You Know?
The Juan Bautista de Anza National Historic Trail runs 1200 miles from Arizona to central California, passing close to Pinnacles National Park at the town of San Juan Bautista. Explore the trail by foot, or view the Anza Trail Guide online for more information. More...