They followed the traverse route below the mountain's northeast ridge, as pioneered by Norton in 1924, rather than the ridge itself.
Messner decided spontaneously during the ascent to use this route to bypass the exposed northeast ridge.
He climbed with Kammerlander up the normal route along the northeast ridge.
The current standard route is that of the second ascent along the northeast ridge.
One such area on San Bruno Mountain was along the northeast ridge.
Finch and Bruce sent him back to the camp and again climbed to the northeast ridge but they were no longer connected by a rope.
The first in 1921 was an exploratory expedition led by Harold Raeburn which described a potential route along the whole northeast ridge.
The northeast ridge is reported as the gentlest and the most classic.
The northeast ridge is more difficult at class 5.5, but is a notable climb on generally good rock.
One week later they climb the mountain via the northeast ridge.