Mount Diablo's distinctive "pillow basalt" erupted from submarine volcanoes hundreds of millions of years ago. Learn how it made its way to the top of a mountain, in the fifth episode of the TRAIL THROUGH TIME, a series of geology videos featuring naturalist Ken Lavin. Sponsored by the Mount Diablo Interpretive Association in partnership with Save Mount Diablo. Videography by Macha Rose. Animations by Tanya Atwater, UC Santa Barbara. Music by Phil Heywood. Produced by Joan Hamilton.

SAND DOLLAR SECRETS   The Pacific Ocean once lapped against the Sierra Nevada foothills. Here's the story of how the Bay Area eventually became dry land with two bedrocks.  Join us on the TRAIL THROUGH TIME, a series of geology videos featuring naturalist Ken Lavin. Sponsored by the Mount Diablo Interpretive Association in partnership with Save Mount Diablo. Videography by Macha Rose. Animations by Tanya Atwater, UC Santa Barbara. Music by Phil Heywood. Produced by Joan Hamilton.

Meet the wild babies of Mount Diablo and learn what superpowers they are developing as they grow from babes in the woods to full grown predators—or prey! Whether sharp-toothed and venomous, or soft and fluffy, these wild babies are sure to surprise you with their innate gifts.   Are baby rattlesnakes really more dangerous than adults? How big are great horned owls’ eyes? Which mom carries over 100 babies on her back? Watch "Wild Babies" and find out!   A Mount Diablo Interpretive Association video produced by Wally De Young        

CLASHING PLATES   The story of the Bay Area landscape begins 190 million years ago, 3,000 miles out in the Pacific Ocean under 10,000 feet of water. Join us on the TRAIL THROUGH TIME, a series of geology videos featuring naturalist Ken Lavin. Sponsored by the Mount Diablo Interpretive Association in partnership with Save Mount Diablo. Videography by Macha Rose. Animations by Tanya Atwater, UC Santa Barbara. Music by Phil Heywood. Produced by Joan Hamilton.

FRANCISCAN ROCKS  The first person to study Mount Diablo geology in depth was a quirky UC Berkeley professor named Andrew Lawson. He found rocks that had emerged from volcanoes in the mid-Pacific. But how did they get on top of a 3,849-foot mountain? Join us on the TRAIL THROUGH TIME, a series of geology videos presented by the Mount Diablo Interpretive Association in partnership with Save Mount Diablo.

TRAIL THROUGH TIME   A 6.3-mile hike from the top to the bottom of Mount Diablo travels through the Bay Area’s entire geologic history. Presented by Mount Diablo Interpretive Association, featuring Ken Lavin. Videography by Macha Rose. Animations by Tanya Atwater, UC Santa Barbara. Music by Phil Heywood. Produced by Joan Hamilton. Audible Mount Diablo is a joint project of the MOUNT DIABLO INTERPRETIVE ASSOCIATION and SAVE MOUNT DIABLO. 

Spring has come and gone, but the wildflower bloom is not done. Mount Diablo has its own superblooms, and some of them are long lasting.  A Mount Diablo Interpretive Association film featuring Kendall Paul Oei. Episode 12 in the Wild Mount Diablo series. 

This just in: The ladybugs have returned to Mount Diablo!  Learn all about their meanderings in this Mount Diablo Interpretive Association video featuring naturalist Ken Lavin. Images by Arnold Joe, Scott Hein, and Kendall Oei. Music by Daniel Kaede. Produced by Joan Hamilton. Adapted from "Mitchell Canyon" Audible Mount Diablo, 2017.

CONNECTIONS  As botanist Heath Bartosh explains in this final episode of "A Hiker's Guide to Mount Diablo Plants," Bay Area biodiversity hot spots are connected to places much farther south.  Presented by Save Mount Diablo in partnership with Mount Diablo Interpretive Association Featuring Heath Bartosh with Seth Adams, Robert Doyle, Lindsey Hendricks-Franco, Brian Peterson, Cyndy Shafer Music  Phil Heywood, Steve Arnold, Podington Bear Fire Recovery Illustration  Laura Cunningham Production and Narration   Joan Hamilton Photographs: Scott Hein, Stephen Joseph, Troy Montemayor and Seth Adams, Heath Bartosh, Steve Edwards, Brad Heckman, Helovi/istock, Joan Hamilton, Shawn Hanrahan/Texas A&M, Jepson Herbarium, Al Johnson, Neal Kramer/Strybing Arboretum, SWKrullImaging/iStock, Kit Leong/iStock, Marshman, Carl Osborn, Bill Sattler, San Ramon Valley Fire Protection District, Arturo Reina Sanchez, Spyglass Hill, Terry Tomkins/USDA, Charles Webber/Cal Academy of Sciences, Westphalia/iStock Special Thanks  Bay Nature Institute

LAND OF DISCOVERY  Mount Diablo has attracted some famous botanists over the years, including David Douglas, Alice Eastwood, and John Howell. Learn their stories—and those of the modern-day explorers following in their footsteps. Presented by SAVE MOUNT DIABLO in partnership with the Mount Diablo Interpretive Association.  Featuring Heath Bartosh Photographs: Scott Hein, Stephen Joseph, Troy Montemayor and Seth Adams, Heath Bartosh, Steve Edwards, Brad Heckman, Helovi/istock, Joan Hamilton, Shawn Hanrahan/Texas A&M, Jepson Herbarium, Al Johnson, Neal Kramer/Strybing Arboretum, SWKrullImaging/iStock, Kit Leong/iStock, Marshman, Carl Osborn, Bill Sattler, San Ramon Valley Fire Protection District, Arturo Reina Sanchez, Spyglass Hill, Terry Tomkins/USDA, Charles Webber/Cal Academy of Sciences, Westphalia/iStock  Music: Podington Bear, Phil Heywood Fire Recovery Illustration: Laura Cunningham, Bay Nature Magazine Production, Narration: Joan Hamilton