Dihedral Wall | A3 Big Wall on El Capitan


Aid version of Dihedral Wall (8b+).

The third route to be climbed on the main face of El Capitan and the first from non-locals. A siege ascent over eight months with fixed ropes almost the entire length of the route.

There was on El Capitan one line left, the direct south west face, logically left unclimbed to the last. (Ed Cooper)

References

[1] Roper, S ed. (2002). Ordeal by Piton. USA: Stanford University Library p111-117

Contributors
duncancritchley
47 contributions since 13th October 2025.

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Ascents

4 recorded ascents.

Climber Style Ascent Date Suggested Grade
Ed Cooper Aid | ground up Between 31st Mar 1962 and 26th Nov 1962
First ascent.
Jim Baldwin Aid | ground up Between 31st Mar 1962 and 26th Nov 1962
First ascent.
Glen Denny Aid | ground up Between 31st Mar 1962 and 26th Nov 1962
First ascent.

Denny joined Cooper and Baldwin half way through the siege.

References

[1] Roper, S ed. (2002). Ordeal by Piton. USA: Stanford University Library p111

Beverly Johnson Rope Solo | ground up Oct 1978
First female ascent.