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On January 18, 1997, in the early afternoon, a large
rock slide originated on the �Sperone della Brenva�,
a high buttress on the western flank of
2 skiers lost their lives, 10 people were injured, on the opposite side hundreds of conifers were thrown down due to the air wave
- Barla, G., Dutto, F., Mortara G. (2000): Brenva Glacier rock avalanche of 18 January 1997 on the
- Giani, G.P., Silvano, S., Zanon, G. (2001): Avalanche of 18 January 1997 on Brenva Glacier, Mont Blanc Group, Western Italian Alps: an unusual process of formation. Annals of Glaciology, 32, 333 - 338.
A very similar phenomenon occurred in the same area between November 14 and 19, 1920, when two large rockslides triggered along the Brenva Glacier a rock-ice avalanche of 6-7 Mio m3, which dammed the valley and ascended the opposite slope.