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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.

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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.

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2015 Activities

Art in the Park – Arts of Bear Valley – Art Show, Workshops and Demonstrations

palette webArt Show – August 15 – September 6, 2015  –

 Interpretive Workshops and Demonstrations on Weekends

A unique opportunity to combine the beauty of the Park with different expressions of art.  These free workshops will begin at 12 noon and will be limited in size.  Children 6 and up as well as adults are welcome.  Come early and check in at the Art Show which will be held in the Ralston Classroom in the Education Building next to the Visitor Center.

August 22 – Plein Aire Demonstration                                  August 23 – Color Mixing with Jan Alcalde

August 29 – Weaving with Therese and Steve May            August 30 – Waterfalls & Stream Beds with Pat Rohovit

September 5 -Sketching with Sandra Maurer                      September 6 – Pastels with Elaine Cahill



Sept. 11 & 12, Sept. 18 & 19, Sept. 24, Oct. 2 & 3, and Oct. 9 & 10logo

Become a ‘citizen-scientist’ as we explore California’s natural environment.  Learn about opportunities that you can take on to share and engage others in natural resource stewardship through education and service.

Register Now!  5 week certification training at Calaveras Big Trees State Park

Registration is required and participation is limited to 30.

To register, please  Click Here 

Cost for this workshop is $350.00 per person.

There are a limited number of scholarships available. To apply for a scholarship, Click Here:

For more information on the California Naturalist Program, Click Here

For more information contact:  Kim Ingrahm  at







3rd Annual CBTA Fundraiser

KCBT – August 1945  An Original Radio Play

Dinner Show – Saturday October 3 – 5:30 pm  **  
Matinee Show – Sunday October 4 – 2:00 pm
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It’s 1945.  You are in the studio audience as Hollywood’s biggest stars broadcast live from KCBT, a wartime radio station at Calaveras Big Trees, away from the threatened coast.  It’s all here: lively songs, Big Trees jokes, a Calaveras mystery, and, of course, commercials.


Dinner Show-$50 per person ;  $180 for group of 4;  $320 for table of 8 ** Includes Wine, Appetizers and dinner.

Guests are encouraged to dress in 1940’s attire.  Reservations required for dinner

 Sunday Matinee-$30 adult- $15 children 12 & under  – 2 pm

Location:  Jack Knight Hall-Calaveras Big Trees       Call 209-795-1196 for more information

Your participation will help support CBTA as it fulfills its mission to support the delivery of high quality educational and interpretive programs at Calaveras Big Trees State Park.



Other 2015 Dates to Save

May 23 – September 7 – (weekends and holidays) “Summer Sweetness” – Ice Cream and Popcorn sold at the Warming Hut

August 15 – September 6 – Arts of Bear Valley Art Show and Workshops

October 3Fundraising Dinner Show – “KCBT – August 1945 – A Radio Play”

December 296th Annual Winter Wonderland Carnival


Visitor Center Hours – Daily 9 am – 6 pm through September 7

September 8 – September 30 – 10 am – 5 pm Sunday through Thursday – 9 am – 6 pm

Camping –  All camping is on reservation.  Contact Reserve America at 1-800-444-7275  for reservations.  The Dump Station is open.

North Grove Guided Tours – Guided walks of the North Grove are held daily at 1 pm.   The walk is 1.5 to 2 hours.  Meet in front of the Visitor Center.  Bring water and your comfortable shoes.

Interpretive Programs 2015

Weekends only:  August 22 – September 7

Jr. Ranger:  7 – 12 year olds.  Meet behind the old Visitor Center at 10 am for an hour.  Earn momentos and learn about the park.

Jr. Cub: 3 – 6 year old friends and their designated adults are invited to join us behind the Visitor Center on most summer mornings at 10 am for up to an hour.  Learn about the park with age-appropriate activities.

Astronomy Programs:  Meet at the Scenic Overlook

Thursday, September 10 starting at 7:30 PM; Thursday, October 15 starting at 7:00 PM; Thursday, October 22 starting at 7:00 PM; Thursday, November 12 starting at 7:00 PM.

Campfire Programs

Saturday at 8:00 pm



Saturday  September 19 – “Disturbance and Succession in Sierra Nevada Ecosystems”      Presented by Dr. Tom Hofstra


How have our local plant and animal communities changed through time.  Dr. Hofstra is Professor of Forestry and Natural Resources at Columbia College.

October 17 –  “Myths, Monsters, and Heroes: Amphibians and Reptiles of the Calaveras Region” Presented by Paul Ustachus

Dr. Ustach, Professor of Biology at San Joaquin Delta College, has previously presented seminars at this park on various local mammals.

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)795-1196 or visit our website at


Join CBTA !

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

Since 1974, CBTA has been able to assist in enhancing the visitor’s exploration and enjoyment of Calaveras Big Trees State Park.

Becoming a member of CBTA affords you unique benefits like seminars, workshops, trainings, special events, collaboration and so much more.  Other benefits include a 20% discount (beginning October 1st) in the Visitor Center store and the Big Tree Bulletin published three times a year.

But the greatest benefit of being a member of CBTA is knowing you are contributing to protecting Calaveras Big Trees State Park and helping others gain an understanding, awareness and appreciation of its natural, cultural and recreational resources.

CBTA was established 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 or click here to download an application.  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.

Support CBTA While You Shop

Now you can help Support Calaveras Big Trees Association as you Shop!

We now have several different programs that are easy to join that allow a percentage of your purchases to be directed to Calaveras Big Trees Association


The owners of Sierra Hills Market and Angels Food Market have generously made available the Escrip program to benefit local non-profit organizations through the use of the Escrip Community Card.  When you use your the card, CBTA has the ability to earn up to 5% of monthly purchases when you shop at either market.  How easy is that!  Just show your card or give the clerk your phone number and you help support CBTA.  Once you are enrolled, you can go online and find out about other benefits of the Escrip program.

To sign up simply down load the  form Escrip Form here, fill it out and take it with you the next time you shop at Sierra Hills or Angels Food Markets,  or you may sign up in the store.  Please indicate Calaveras Big Trees Association as your desired beneficiary.


S.H.A.R.E.S is an acronym for Supporting Humanities, Arts, Recreation,  Education and Sports and is Save imagesMart’s way of
giving back to the community.  Again, when you present this card at checkout, a percentage of your purchase is directed to CBTA.



If you shop at, you can now support CBTA by shopping at AmazonSmile.  Everything like Amazon Prime works just the same once you are

When first visiting AmazonSmile, you will  be prompted to select a charitable organization from almost one million eligible organizations.  For eligible purchases at AmazonSmile, the AmazonSmile Foundation will donate 0.5% of the purchase price to the customer’s selected charitable organization.

Click Here to get started.

However you choose to do it, it is a painless way to help CBTA continue its efforts to provide outstanding interpretive and educational programs at Calaveras Big Trees State Park.  Thank you for your continued support.  Please call the office with any questions at 209-795-1196.