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CBTA is a non-profit educational association dedicated to the interpretation of human and natural history at Calaveras Big Trees State Park, in cooperation with the California State Park System. All contributions are tax deductible.

Save Our State Parks

The State Park Foundation does a great job of staying on top of current reports with regard to the state park closures. Please visit their site by clicking here for the latest update.

Latest News

New Visitor Center is OPEN

vcweb2We are pleased to announce that the doors of the long awaited Visitor Center are open.

The official Grand Opening will be held May 24 in conjunction with the 150th Anniversary of California State Parks.  See below for more information.

Visitor Center Hours

April 1 – May 22 – Daily 10 am – 4 pm

Too Much Fun!!

Calaveras Big Trees Association Invites you to a day of TOO MUCH FUN!!

Sunday May 4 - Featuring – MOUNTAIN MELODY Logo1Women’s Chorus of Calaveras

and a private guided walk In the majestic North Grove of Calaveras Big Trees State Park

The activities will begin at 2:00 pm with the  private guided walk     (meet at the Warming hut by 1:45)

The walk will be followed at 4:00 pm with a delightful concert in the     historic Jack Knight Hall by MOUNTAIN MELODY which will include  Broadway, classics, oldies and more fun musical selections.  This well known local chorus is made up of women from all around Calaveras,  Tuolumne and Amador counties.  They come together as a group to create a stunning harmonic blend of tones as they perform

Please join us for an outdoor adventure and great music.  Feel free to come early, bring a picnic and enjoy the park before the walk.  If you don’t feel like walking, please join us just for the concert.  It is sure to be wonderful.

Tickets $25.00  

(includes entrance into the park if purchased before May 1, 2014)  If space available—tickets will be sold at the door for $25— This will not include $10 Park entrance fee

Click here to Buy tickets online at                     Please call 209-795-1196 with questions or for assistance


CBTA Announces 2014 Seminars

April 26 - “Birds of the Sierra Nevada” Presented by Ed Pandolfino, PhD
Ed (along with Ed Beedy) are co-authors of the new UC Press book “Birds of the Sierra Nevada”. The book contains excellent discussions of each bird of the area, both biology and distribution, as well as excellent illustrations. Since retiring in 1999 Ed has devoted his life to birds, working on habitat conservation and avian research. Ed is president of Western Field Ornithologists, and is one of the Regional Editors for the publication, North American Birds. He plans to take those interested out to watch our local birds in the Park before the program at 8 am.  Please meet at Jack Knight Hall for the walk.
May 3 - “John Muir in the Big Trees” Presented by Michael Wurtz
Michael is the Archivist of the John Muir Papers Collection at the University of the Pacific. He will speak about John Muir’s three visits to Calaveras Big Trees and his other visits to the Sequoias of the Sierra. Mr. Wurtz organized the Park’s archives in 1991 and his parents were docents at the Park
June 7 - “The Sequoias of Sequoia and Kings Canyon National Parks”  Presented by Steve Stocking
Steve is a volunteer here at Big Trees State Park and as a C.B.T.A. board member helps with the seminar program. Steve spent 10 years with the National Park Service in Sequoia and Kings Canyon National Parks. His revised edition of his “Sequoias of Sequoia and Kings Canyon National Parks” has just been published.
September 20 - “Going Batty” Presented by Dr. Dave Johnston
Dave is an Associate Wildlife Ecologist at H.T. Harvey & Associates and a board member of the North American Society for Bat Research.  Dave has spent over 20 years investigating impacts to bat populations from post construction wind and solar energy projects, urbanization, and transportation issues. He is the lead author for the California Bat Mitigation Techniques, Solutions, and Effectiveness for the State of California and for many other technical reports and scientific investigations.  Dr. Johnston has on-going bat projects in Hawaii, California, Belize and Mexico.  Shortly after the lecture he will lead us into the field to mist net and to observe bats in the wild.
October 4 Seminar - “Conservation of Native Bees”  Presented by Julie Serences
Julie wants us to appreciate our native bees in their role as pollinators. Native bees are the most important group of pollinators of native plants. Julie is a professional educator with over twenty-five years of experience teaching learners from pre-school to adult.  She is currently on the Xerces staff as a volunteer consultant for Pollinator Conservation.
All Seminars will be held in Jack Knight Hall at Calaveras Big Trees State Park from 10:00 am-12 noon  There is a day-use fee to enter the Park.  The seminars are free and open to the public.  Pack a lunch, bring the family and plan on spending the day among the Giant Sequoias.  For more information call Calaveras Big Trees Association at (209)795-3840 or visit our website at www.bigtrees.or
Please Click Here to download Seminar schedule

Save this date:      May 24, 2014CSP-150th-logoweb  The California Department of Parks and Recreation and Calaveras Big Trees Association are collaborating on a grand opening celebration of the new visitor center in conjunction with the commemoration of the 150th anniversary of the first California state park. Come to the park at 11 a.m. for the official opening ceremony, followed by guided walks, children’s activities, and various surprises until 4 p.m.  Food will be available for purchase.  Please plan on coming and join in the celebration.  Visit their website by clicking here

Please call the office at 209-795-1196 for more information.

CBTA Dates to Save


May 4 – Concert and Walk in the Park – Too Much Fun! (see above)

August 16 - Family Day

August – Fundraising Dinner (details to be announced)

May – August – Summer Sweetness – Popcorn and ice cream sold on weekends and holidays in the park.

Camping Information

North Grove campground is open on a first come,  first serve  basis.    Please call for updates and information.  (209) 795-2234 or (209) 795-3840.    

The Parkway to the river and South Grove will open April 19.

Join CBTA !

Support from members helps the Calaveras Big Trees Association fulfull its mission of delivering high quality educational and interpretive programs at Calaveras Big Trees State Park.

As a member of CBTA, you are invited to attend seminars, nature talks, workshops and other special events.  Other benefits include discounts in our Visitor Center store, Big Tree Bulletin, social get-togethers and fellowship with other nature lovers.

You will also have the satisfaction of knowing that you are contributing to protecting this important resource and helping others gain an understanding, awareness and appreciation for the natural, cultural and recreational resources at Calaveras Big Trees State Park.

CBTA was establised as a 501(c)(3) non-profit corporation in 1974,  Therefore, your membership and contributions are tax deductible to the extent allowable by law.

If you would like to join, please click here to read about the different levels of membership and then to complete the application online.  Thank you all for all of your support.  We couldn’t do it without you!  Please call the office at 209-795-1196 if you have any questions.