Aiguille de Bionnassay

The Aiguille de Bionnassay (elevation 4,052 metres (13,294 ft)) is a mountain in the Mont Blanc massif of the Alps in France and Italy.

[1] The first ascent of the Aiguille de Bionnassay was undertaken on 28 July 1865 by Florence Crauford Grove, Edward N. Buxton and Reginald S. McDonald, with guides Jean Pierre Cachat and Michel Payot.

[2]: 51 [3]: 200 The east ridge was first climbed in descent as part of a traverse from the Dômes de Miage by Katharine Richardson, Emile Rey and Jean-Baptiste Bich on 13 August 1888.

[2]: 51 The long west ridge was first climbed in its entirety from the Col de Tricot in 1911 by Fraulein Eleonore Hasenclever and Freulein H. Wirthl with M. Helff, K.G.

[3] The complete north-west face route was finally climbed in 1926 by billionaire businessman and art collector, Robert Wylie Lloyd, with his guides Adolf and Josep Pollinger.

Ascent of Mont Blanc, showing route from Plan Glacier to Durier Hut, over Aiguille de Bionnassay, Dome du Gouter, Bosses ridge to Mont Blanc summit. Return route via Le Goûter is shown in blue.