Name/Title
Chouinard Stopper #2Entry/Object ID
2026.1.74Description
One of the Chouinard stoppers used on the 1973 clean ascent of the Northwest Face of Half DomeUse
Designed to fit into narrow, tapered rock cracks, locking securely when weightedContext
One of the stoppers that was used on the 1973 ascent of the Northwest Face of Half Dome. Climbers Doug Robinson, Dennis Hennek, and Galen Rowell climbed without the use of pitons, making it the first big wall clean ascent. The climbers did not even bring a hammer. It was featured on the cover of National Geographic's June 1974 issue. This was a big achievement at the time because there was not much clean climbing gear in production. This stopper was manufactured by Chouinard Equipment and is an early edition. The later modifications added a sleeve to the wire to protect fingers from damaged threads. They also added later a sliding sleeve to prevent multiple stoppers on racks from getting tangled.Collection
Yosemite Climbing Museum Permanent CollectionCategory
Climbing Hardware, Nuts/Chocks
Acquisition
Accession
2026.1Notes
Acquired from Doug Robinson circa 2006Made/Created
Manufacturer
Chouinard EquipmentInscription/Signature/Marks
Type
Makers MarkLocation
On the face of the nutTranscription
A diamond with a C in it, and the number 2Dimensions
Dimension Description
Entire wire with nutLength
6-1/4 inDimension Description
NutWidth
7/16 inLength
7/16 inLocation
Location
Display Case
Exhibit Case 10Date
January 30, 2026Provenance
Provenance Detail
Doug RobinsonNotes
Gifted to Ken Yager from Doug Robinson circa 2006General Notes
Note Type
Cataloging NoteNote
Caption in the museum is: "National Geographic article chronicling Doug Robinson’s, Dennis Hennek’s, and Galen Rowell’s 1973 ascent of the Northwest Face of Half Dome. The team is credited with doing the first hammerless or clean ascent of a big wall. The three tiny Stoppers were used on the climb."Create Date
January 30, 2026Update Date
February 16, 2026