Closed for the Season
Sequoia Snack Shack
Calaveras Big Trees Association
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Optical Astronomy Night This Thursday!
Calaveras Big Trees Association
Scenic Overlook · Calaveras Big Trees State Park
Don’t miss this Thursday’s Optical Astronomy Moon Night — one of our most magical evenings of the year! Join us at the Scenic Overlook for a chance to gaze at the moon and night sky through optical telescopes. Whether you’re a seasoned stargazer or a first-timer, this is an experience you won’t forget.
Event Details
Date & Time
Thursday, May 21 · 8:00 PM
Location
Scenic Overlook · Calaveras Big Trees State Park
Cost
$10 Park Entrance Fee · Program is free
Who Can Come?
All ages welcome
We have a full season of Optical Astronomy Nights planned — alternating between Moon Nights and Dark Sky evenings through September. Use the links below to learn more and plan your visit!
2026 Optical Astronomy Night Series
View the full schedule of Moon Night and Dark Sky events running May through September.
Night Skies with Doc Nancy
Join Doc Nancy for an evening of guided night sky exploration — a beloved program at Calaveras Big Trees.
Free Public Seminars 2026
Calaveras Big Trees Association
Education Room & Campfire Center · Calaveras Big Trees State Park
Five incredible presentations from experts passionate about the natural and historical world around us. Whether you’re a longtime nature lover or just curious about the park, there’s something for everyone.
June 6
Conservation Ambassador’s Wild Things
Campfire Center · 10:00 AM
June 20
“I Sing to the Earth and She Sings Back”
Presented by: M. Kat Anderson
Education Room · 10:00 AM
July 18
Black Bears in California
Presented by: Arjun Dheer
Education Room · 10:00 AM
July 25
The Birds of Calaveras Big Trees
Presented by: Alan Beymer
Education Room · 10:00 AM
August 15
Finding the Mammoth Grove Hotel
Presented by: Joan Allday & Sally Finch
Education Room · 10:00 AM
Closed for the season
Sequoia Snack Shack
Calaveras Big Trees Association
Join us for the 2026 UC California Naturalist Course at Calaveras Big Trees State Park.
This 40-hour course combines UC science curriculum with field trips and guest lecturers to explore the natural history of the central Sierra Nevada.
• Dates: Thursdays & Fridays, May 28 – June 26, 2026
• Location: Ralston Classroom at Calaveras Big Trees State Park
• Cost: $310 (includes a 1-year CBTA membership)
Space is limited to 24 students. Secure your spot and register today!
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Dress warm!
Bring a warm blanket!
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