Black Diamond Mines Autumn Hike

Sat · Nov 7·11 AM – 12 PM·RUTH BANCROFT GARDEN · Walnut Creek

Plant name tour at Ruth Bancroft Garden explores Latin naming, botanical tongue‑twisters, and stories behind plant names with longtime docent Ersten Imaoka.

Sat · Nov 7·2 PM – 4 PM·Walnut Creek Library, 2nd Floor, Oak View Room, Walnut Creek

Dungeons & Dragons® adventure for teens ages 13–18 at Walnut Creek Library’s Oak View Room, 2nd floor, open to all experience levels; registration required.

Sat · Nov 7·2 PM – 4 PM·Walnut Creek Library, 2nd Floor, Oak View Room, Walnut Creek

Dungeons & Dragons® adventure at Walnut Creek Library’s Oak View Room, open to all experience levels; registration required, for ages 13–18.

Sat · Nov 7·8 AM·Hidden Valley Park, Redwood Dr. & Center Ave. Martinez, California 94553

High school scholastic cross country competition at Hidden Valley Park.

Sun · Nov 8·2 PM – 3 PM·Lindsay Wildlife (calendar) · Walnut Creek

Explore owl diet, examine prey specimens, dissect a pellet for bones, and craft an owl to take home at Lindsay Wildlife, $40 member / $45 non‑member, ages 4–6.

Mon · Nov 9·4 PM – 5:30 PM·Lindsay Wildlife (calendar) · Walnut Creek

Hands‑on wildlife caregiver class at Lindsay Wildlife Experience, exploring zoology, enclosure design, enrichment; $45 member/$55 non‑member per class, for ages 9–12.

Sat · Oct 24·9 AM – 12 PM·Save Mount Diablo · Walnut Creek

Borges Ranch Fall Hike (Save Mount Diablo) — Enjoy a fall hike at Borges Ranch, then explore historic ranch buildings and farm animals.

Sun · Oct 25·9 AM – 12 PM·Save Mount Diablo · Walnut Creek

Hike Bob Walker Ridge through native blue oak forests for a closeup view of Mount Diablo’s eastern side.