Banff Yoho & Kootenay National Park
nick.baggaley , Thursday 13th January, 2022 4:25PM
Saw a natural avalanche on the N side of Fairview above Rockfall Wall running down to the lake. Unknown trigger, possibly storm snow sluffing off the steep cliffs above, warming due to dark rocks, or rockfall. On the fan below, the initial slab triggered a larger slide, which stepped down several times to the base and propagated widely (see photo).