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California Underground
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10 August 2009

Your Journey Guide to the Underground
If you crave adventure, an "off the beaten path" way to explore California, the answer is in your hands, literally. California Underground Adventures delves into the state's best caves, mines and lava tubes. Plus the authors', Jon Kramer & Julie Martinez, tongue-in-cheek notes make this guidebook almost as fun to read as the caves are to explore!
Features
- Informative and entertaining guide to California's lava tubes, mines and caves
- Complete site details including temperature, information on guided and self-guided tours and driving directions
- Fascinating details about each site's history and geology
- Full-cover photographs of underground wonders
- Jon's Candid tips that help you see the sites through experienced eyes
Jon Kramer is an adventurer first, and also a geologist, writer, climber and surfer (but not necessarily in that order, depending on the surf). He received his Bachelor of Science degree in geology at the University of Maryland and has pursued life as an adventuring paleontologist ever since. His interests are quite varied and include all things natural. In addition to popular travel and adventure writing, Jon has published scientific papers on critters as ancient as 2 billion year-old bacteria and as young as 12,000-year-old mammoths. Jon travels extensively with his wife Julie, sometimes settling down for a rest in Minnesota, Florida, California and interesting points in between.
Julie Martineza is an explorer, naturalist, freelance artist and formal art instructor. Her appreciation for insects, plants, rocks and fossils started in childhood with a collection that has grown throughout her life. Julie graduated from the University of Wisconsin, Stevens Point, with a degree in Fine Arts and Biology. She initially worked as an illustrator for the medical field but in the late 1980s began a freelance career, which she has enjoyed ever since. Julie’s work is featured in many textbooks, journals and museum exhibits throughout North America. She is also a staff teacher at Minnesota School of Botanical Art. When not teaching, she travels with Jon, exploring the wilds of the world.
Welcome to the Underworld
Caving vs. Spelunking
Using this Guide
Underground Basics
Leave No Trace
Safety Underground
How Caves Form
A Brief History of the California Underworld
Map of Sites
Sites
- Alabama Hills
- Black Chasm Cavern
- Boyden Cavern
- Bronson Cave
- California Cavern
- California State Mining and Mineral Museum
- Chumash Painted Cave
- Crystal Cave
- Dublin Gultch
- Eagle and High Peak Mine
- Empire Mine
- Eureka Mine
- Gold Cliff Mine
- Hall City Cave
- Hole-in-the-Wall
- Jot Dean Ice cave
- Lake Shasta Caverns
- Lava Beds National Monument
- Maggie Mine
- Mercer Caverns
- Mitchell Caverns
- Moaning Cavern
- Natural Bridges
- Packsaddle Cave
- Pinnacles National Monument
- Pluto’s Cave
- Sixteen to One Mine
- Subway Cave
- Sunny Jim Sea Cave
- Sutter Gold Mine
References / Websites / Resources
Glossary
Index
About the Authors