ascents in the French and Swiss Alps, including the first ascent of the DentduRequin [ fr ] above the town of Chamonix. Slingsby was an honorary member of
the Aiguille du Midi to the Aiguille du Plan, either returning to the cable car or descending the Mer de Glace from the 'Plan' to the Requin Hut or continuing
ascent of the DentduRequin (regarded as a significant event in the history of Alpine climbing) and the first traverse of the Aiguille du Plan, reaching
Breithorn, Castor and Pollux and both summits of Monte Rosa, and the DentduRequin Needle on Mont Blanc. Barry soloed the Italian Ridge on the Matterhorn