Calaveras Big Trees Association

2026-08-18T00:00:00-07:00
  • Giant Sequoia Forests in a Rapidly Changing World

    Jack Knight Hall - Calaveras Big Trees State Park 1170 East Highway 4, Arnold, CA, United States

    "Science and Conservation of Giant Sequoia Forests in a Rapidly Changing World" Presented by Anthony Ambrose and Wendy Baxter In-Person Seminar Jack Knight Hall Saturday April 23 10am -12pm Giant sequoia forests are experiencing unprecedented threats from drought, fire, and insect attack. This presentation will describe how changing environmental conditions present novel challenges [...]

  • John Muir Laws Workshop-sold out- Waitlist Available

    Ralston Classroom 1170 East Highway 4, Arnold, CA, United States

    Sorry -- Sold Out Wait List Available- Click Here   “Thinking Like a Naturalist: Reclaiming the Art of Natural History”                                Learn how to be a naturalist. Our day begins with an introductory class: Thinking like a Naturalist, where we explore [...]

  • John Muir and the Giant Sequoias – Seminar

    Calavers Big Trees - Jack Knight Hall 1170 E Highway 4, Arnold, CA USA, United States

    Treewise and Sequoical: John Muir and Giant Sequoia Naturalist John Muir may have come to California in 1868 to see the Giant Sequoia - the most massive trees in the world. In his early years he reveled among the groves. Then he studied them. Then he saw the need to preserve the Big Trees and [...]

  • “Wild Things”

    Calaveras Big Trees Campfire Center 1170 East Highway 4, Arnold, CA, United States

    Get up close and personal with a raccoon, porcupine, a river otter and other surprises. WILD THINGS are brought to the Park by CONSERVATION AMBASSADORS “Providing a loving home for displaced, abused, abandoned, injured wild animals” Call 209-795-1196 for more information Seminars and Events Upcoming

  • 2022 CBTA Annual Meeting

    ZOOM

    Wonder what Calaveras Big Trees Association has been up to? Join us on Saturday June 25, 2022 at 11 am to find out what has happened this past year and the plans for the future. So that many more of our out of area members have the opportunity to participate in the meeting, the 2022 [...]

  • Birds: The Inside Scoop and Outside Stories – Seminar

    Calaveras Big Trees State Park, Ralston Classroom 1170 East Highway 4, Arnold, CA, United States

    “BIRDS: The Inside Scoop and Outside Stories” Presented by Nancy Muleady-Mecham PhD Seminar & outside - Saturday September 10, 2022-10am-12pm – Ralston Classroom Inside Birds: Avian Structure and Function Join Doc Nancy for a literal look inside birds. How have they evolved to be the unique class they are today? From skeleton to muscles, digestion [...]

  • Fact and Folklore of Big Trees

    Ralston Classroom 1170 East Highway 4, Arnold, CA, United States

    Presented by Joan Allday Seminar – Saturday September 17, 2022 – 10am-12pm- Ralston Classroom Come hear the little-known stories that most people haven’t heard before…..some will be fact and others will be folklore. Call 209-795-1196 for more information.

  • CBTA February 2023 Board Meeting

    ZOOM

    The monthly Board Meeting of the Calaveras Big Trees Association is being held on Wednesday February 22, 2023 at 1 pm. Anyone one interested is welcome to attend. Agenda and Zoom link will be available February 20, 2023   Please contact 209-795-1196 or cbta@bigtrees.org with any questions.

  • Visitor Center Closed Friday

    Visitor Center

    Because of safety concerns, the Visitor Center will be closed on Friday February 24, 2023. More snow is predicted.  

  • Explore the Pacific Crest Trail – Seminar

    Ralston Classroom 1170 East Highway 4, Arnold, CA, United States

    Hiking the Trail Dave Baugher, retired Arnold fire chief, completed hiking the Pacific Crest Trail in August 2022. After a nine-year adventure, Dave has many stories to tell. Telling the Stories Trail-Tested stories and information from 'Crossing Paths: A Pacific Crest Trailside Reader.' Presented by contributing writer and hiker Dave Baugher. Where: Ralston Classroom    [...]

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