A year later, Cassin completed his crowning achievement: the first ascent of the Walker Spur of the Grandes Jorasses on the Mont Blanc massif.They reached the summit in 82 hours.

• 一年后，卡森完成他这一生登峰造极之作：首次登上白朗峰群中的大乔拉斯峰沃克肋稜，他们在82小时内攻顶成功。