'...It is, hands down, the hardest face in the Canadian Rockies.
Five thousand feet of sheer, black, and north-facing limestone,
steeper than the Eiger, one and a half times as high as El Cap,
a great dark cape of a peak...'
-- 'Ten Climbs To Remember: 1974, North Face of the North Twin', Barry Blanchard, AAJ, 2002, p. 29