Matterhorn, via Bonatti in 7 hours 14 minutes by Aufdenblatten and Lerjen-Demjen
On 27/09/2011 the Swiss alpinists Patrick Aufdenblatten and Michael Lerjen-Demjen climbed the North Face of the Matterhorn via the Bonatti Diretissima (ED+ 1200m) in 7 hours 14 minutes.



