CBTA was formed by a small group of interested people.  Their goal was to help provide financial support for the interpretive activities which would enable visitors to understand, appreciated, conserve, enjoy and explore the areas of Calaveras Big Trees State Park.

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.

Members of the Association are invited to attend seminars, nature walks, films, docent workshops and informative walks.  These programs also help to train those who wish to join the volunteers who staff the Visitor Center, conduct guided walks, lead campfire programs, participate in interpretive projects, assist  Park Rangers in trail maintenance and assist in other ways.

The Visitor Center is operated by CBTA and staffed by volunteers.  All profits from sales items sold by CBTA at the Visitor Center are reinvested in Calaveras Big Trees State Park where they fund long-term capital projects and ongoing interpretive programs.

Come join us in learning more of nature.  You can be as active in the Association as you wish.

The Rewards of Membership:

  • Fellowship with other nature lovers
  • Price discounts on publications in the Visitor Center
  • Newsletter (Big Tree Bulletin)
  • Social get-togethers (the best potlucks in the West!)

Spread the word to your friends and family.  Join CBTA!

All General Memberships receive a 10% discount at the Visitor Center store.

  • Dogwood Memberships receive a member magnet.
  • Cedar Memberships receive a $10 gift certificate at the Visitor Center store plus a member magnet.
  • Sugar Pine Memberships receive a $20 at the Visitor Center store, a member magnet, and a private guided tour of the north Grove for up to 6 people

All Business Memberships receive a small poster identifying them as a CBTA supporter, a member magnet, a listing on CBTA’s “Supporting Business” web page. A listing on the CBTA Bulletin Board in front of the Visitor Center and a listing on the CBTA Facebook “Favorites” page.

CLICK HERE to submit your online membership application!

If you would prefer to mail a check for your Membership Donation, please fill out and submit your membership application, then contact the CBTA right away (phone: 209.795.3840) to let them know that your check will be in transit to follow. Note: If your membership donation must be received within one week of your application. You may also print the membership form in pdf format and mail it with your payment

Please mail your check to:

Calaveras Big Trees Association
P.O. Box 1196
Arnold, CA 95223-1196

Question? (209) 795-3840