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Making America's Best Idea Even Better
Pinnacles National MonumentA view of the High Peaks
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Pinnacles National Monument
Our Partners

By supporting our partners, you also help to support Pinnacles National Monument.

Pinnacles Partnership
www.pinnaclespartnership.org
email Pinnacles Partnership
(831)389-4485 ext 239
5000 Hwy 146
Paicines, CA 95043

Friends of Pinnacles
www.pinnacles.org
email Friends of Pinnacles

Juan Bautista de Anza Historic Trail
www.nps.gov/juba

San Juan Bautista Chamber of Commerce
www.sjbchamber.com

 
A close-up view of rhyolite breccia  

Did You Know?
Rhyolitic breccia is the rock that the High Peaks and other rock formations at Pinnacles are made of. Rhyolite breccia is composed of lava sand, ash, and angular chunks of rock that were explosively ejected from the Pinnacles Volcano.

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Last Updated: October 05, 2007 at 13:13 EST