Make a tax-deductible donation with your Visa, Mastercard, or PayPal account:


Donate $25 or more and get a free copy of Yosemite Big Walls signed by Chris McNamara.

We need YOUR help!
The ASCA depends almost entirely on the generous cash donations of individual climbers. If you ever clip a replaced bolt with "ASCA" stamped on the hanger, you are doing so because a gracious climber sent us a check. We wholeheartedly invite you to become one of these gracious individuals and help the ASCA make climbing routes safe for yourself and other climbers.

Dedicated Volunteers
The ASCA is composed of a group of dedicated volunteers who enjoy replacing deteriorating anchors on classic climbing routes. ASCA rebolters have the time, experience and desire to replace even more anchors with the help of your donation! The ASCA is an almost entirely volunteer organization, with the only payment being a small monthly salary to the Director. Please note that the ASCA is always open to qualified applicants interested in the position of Director. Please direct inquiries to

Where will your money go?
Every $50 you donate will replace five to ten bolts: that is often an entire route! Each tax-deductible donation goes towards buying bolts in a number of classic climbing areas across the United States including: Yosemite, Rumney, Joshua Tree, Calaveras Dome, Red Rocks, Eldorado Canyon, Flatirons, Indian Creek, Zion, Little Cottonwood Canyon and more. We are constantly expanding to new areas and are always open to suggestions of where we should rebolt next.

Replacement in 2018
Since 1998, the ASCA has replaced over 20,000 bolts. The ASCA was born in Yosemite and our replacement efforts have focused on some of the longest classic routes in the western US. In 2018 we hope to replace hundreds more bolts throughout the US. To do this we need YOU to become a member of the ASCA rebolting effort. We could greatly use your donation at one of the following levels:

$25 - Supporter
$50 - Contributor
$150 - Advocate
$1000 - Mentor

The ASCA is a 501(c)(3) organization and all contributions are tax-deductible. All members receive the ASCA newsletter. Send checks payable to:

P.O. Box 3691
Boulder, CO 80307

or donate with your Visa, Mastercard or PayPal account by clicking here:

Please support our sponsors below. We would like to send a special thanks to the Planet Granite who has made extremely generous donations:

American Alpine Club
Black Diamond
Blue Water
Mammoth Mountaineering Supply
Mountain Gear
Omega Pacific
Planet Granite
Redpoint Climber's Supply
Southern California Mountaineers Association
Titan Climbing
Touchstone Climbing
Yates Mountaineering