On 28 July 1865, a climbing party comprising the British climbers E.N. Buxton, F.C. Grove and R.J.S. McDonald, accompanied by the guides Jean-Pierre Cachat and Michel Payot, reached the summit of theAiguille de Bionnassay (4,052 m). They followed what is now known as the standard route.
E.N. Buxton
F.C. Grove
R.J.S. McDonald
Jean-Pierre Cachat
Michel Payot