Left: ca1900 (Jullien brothers) from la Pierre à Bayer, 2090 m a.s.l, view angle, N115°; right: 1908 (unknown author) from le Montenvers, 1913 m a.s.l, view angle, N100°; centre: the 1905 rockfall scar, seen during the 1905-1906 winter (unknown author); dotted line: scar of a rockfall that occurred before the end of the LIA.