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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

Upcoming Events


October 15   “King Sequoia:  The Tree That Inspired a Nation, Created our National Park 

king sequoiaSystem and Changed the Way We Think About Nature”

Presented by William C. Tweed

From a towering tree, one of California’s preeminent naturalists unspools a history that echoes across generations and continents. Former park ranger William C. Tweed takes readers on a tour of the Big Trees in a narrative that travels deep into the Sierras, around the West, and all the way to New Zealand; and in doing so he explores the American public’s evolving relationship with sequoias. It comes as no surprise that the groves in Yosemite and Calaveras were early tourist destinations, as this species that predated Christ and loomed over all the world’s other trees was the embodiment of California’s superlative, almost unbelievable appeal.

This Seminar will be held in the Classroom in The Education Building, near the Visitor Center, 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.

Astronomy Night

September 29th – 6:30 PM start time

At the Overlook – call for directions

7th Annual Winter Wonderland Carnivalcarriage

Wednesday December 28, 2016  11 am – 4 pm

Ticket price includes carriage ride and entrance into Jack Knight Hall where you will enjoy hot cocoa, hot apple cider and cookies, hot dogs & chili & many more surprises!

Tickets $15.00 adults & $10.00 children under 12  (Includes entrance into park if tickets purchased online)

This event sells out every year.   Buy your tickets early

(If Space available Tickets at the door $20 adults & $15 children 12 and under Plus $10 Park entrance fee)

Please call 209-795-1196 for more information.

Click here to buy tickets       Select the hour you wish to have your carriage ride.

Happening in the Park

Saturday – 

1pm—North Grove Guided Walk 

Dogs in the Park – Click here for information

Visitor Center

Daily  10:00 am – 5:00 pm



Camping –  

North Grove Campground –  We are on reservation.  Please click here to make reservations.

Oak Hollow Campground  -at this time is on first come, first serve basis.  No reservations

Rental Cabins are available.  Click Here for more information

The Dump Station – Open



At the Overlook – call for directions

September 29th – 6:30 PM start time

October 27th – (Halloween!!) – 6:30 PM start time

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 changing

Starting on April 1, Save Mart S.H.A.R.E.S. will become Shares powered by eScrip.  Your exisiting SHARES card will no longer be accepted at Lucky, Save Mart or FoodMaxx stores.

If you already are registered with eScrip (which you are if you have the eScrip Community Card used at Sierra Hills or Angels Food Market, you need only register your phone number by clicking here.

If you are new to eScrip, please click here and follow the instructions to register.  Please choose Calaveras Big Trees Association as the non-profit you wish to support.

S.H.A.R.E.S is an acronym for Supporting Humanities, Arts, Recreation,  Education and Sports and is Save Mart’s way of giving back to the community.  By using the Shares program, you can contribute up to 3% of your qualified purchases at Lucky, Save Mart or FoodMaxx stores.

Please call the office at 209-795-1196 if you have any questions or problems.


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.