On 3 September 1879, Albert Mummery, accompanied by the guides Alexander Burgener, Augustin Gentinetta and Johann Petrus, opened the route up the north-west ridge of the Matterhorn, known as the Zmutt Ridge.
On 3 September 1879, Albert Mummery, accompanied by the guides Alexander Burgener, Augustin Gentinetta and Johann Petrus, opened the route up the north-west ridge of the Matterhorn, known as the Zmutt Ridge.