First Recorded Ascent-May 28, 1988; Willy Hersman, John Cafmeyer, Karen Cafmeyer, Larry Hartig,
Frank Jenkins, and Jim Sayler. They reported to have found a cairn on the summit.
NW face from the South Fork trail
NE aspect from Eagle Peak summit. Note the rounded summit of Triangle to the left of Cantata.
SW face from O'Malley Peak summit. Again, note the rounded ridge leading to the tented-plateauish summit.
Again the NE aspect from Eagle Peak summit.
Willy Hersman reported first hearing the name "Triangle Peak" from locals in 1986. The name
is rather descriptive of the peak's shape from the South Fork trail, and fits with the musical theme
given to geographical features in the area.