North aspects of North Twin (left) and Twins Tower (right)

North Twin and Twins Tower from the summit of Mount Woolley August 14, 2007. The famous North Face routes begin on the steep rock faces, in the shade, right, and below the summit of Twins Tower. Twins Tower summit has about 150 metres of prominence from the col with North Twin and about 600 metres of isolation between the two summits. North Glacier/North Ridge, Mount Woolley, Alpine II, August 14 2007. Jasper National Park, Alberta, Canada