This massive rockfall adjacent to the normal route must have been pretty cool to watch from the lifts. After climbing Tower Ridge in Scotland, Jon Waterman and I climbed the north face route of Tour Ronde in the winter of 1978. I lead most of the pitches as he broke both an ice tool and his crampons. We bivied in the lifts and had a few -30 degree nights.
http://www.planetmountain.com/english/News/shownews1.lasso?l=2&keyid=43000#