Mount Diablo Interpretive Association

Mount Diablo Interpretive Association MDIA is an all-volunteer organization supporting Mount Diablo State Park.

Black Point, Eagle Peak, Olympia, North Peak and Summit
06/01/2026

Black Point, Eagle Peak, Olympia, North Peak and Summit

The browning (er 'goldening') is complete.
05/25/2026

The browning (er 'goldening') is complete.

Join us for The Art of Life Unseen — a live webinar exploring unseen narratives in art. Webinar • Registration requiredW...
05/16/2026

Join us for The Art of Life Unseen — a live webinar exploring unseen narratives in art. Webinar • Registration required
When: May 20, 2026, 7:00 PM – 8:00 PM (America/Los_Angeles)
Secure your spot: https://wix.to/MX0W6JC

It looks like a Bumble Bee, but the short antennae and single pair of wings reveal it to be a Bee-mimic Robber Fly (Genu...
05/15/2026

It looks like a Bumble Bee, but the short antennae and single pair of wings reveal it to be a Bee-mimic Robber Fly (Genus Laphria). This is an example of Batesian Mimicry, where a palatable species evolves to mimic a dangerous, untasty, or toxic species. In this case, this fly mimics the Bumble Bee, an insect that most predators choose not to mess with. This fly was observed on our most recent Wonder Hike. Maybe we will see you on the next one on June 10?!

Join us for a guided Wildflower Walk at Mitchell Canyon Visitors Center on May 17, 2026 — 9:00 AM to 12:00 PM. Explore s...
05/14/2026

Join us for a guided Wildflower Walk at Mitchell Canyon Visitors Center on May 17, 2026 — 9:00 AM to 12:00 PM. Explore spring blooms, learn ID tips from experts, and enjoy fresh air on scenic trails. Registration required — secure your spot today: https://wix.to/OflAOwG

Join us for Wonder Hikes 2026 at Mitchell Canyon Visitor Center on May 13 — an inspiring morning of guided hikes and nat...
05/11/2026

Join us for Wonder Hikes 2026 at Mitchell Canyon Visitor Center on May 13 — an inspiring morning of guided hikes and nature discovery. Reservation required. Bring water, sturdy shoes, and a curious spirit. Details & RSVP: https://wix.to/2yzc9kZ

Address

96 Mitchell Canyon Road
Clayton, CA
94517

Telephone

+19259277222

Website

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