Which mountain in the Bernese Alps has a famously challenging north face?

The Alps are the highest and most extensive mountain range system in Europe. It separates Southern from Central and Western Europe and streches approximately 1200 kms (750 mi) across Alpine countries (from west to east): France, Switzerland, Italy, Monaco, Liechtensteins, Austria, Germany and Slovenia.

The Eiger is 3,967 m (13,015 ft) mountain of the Bernese Alps, overlooking Grindelwald and Lauterbronnen in the Bernese Overland of Switzerland. The Eiger has its 1,800 m high (5,900 ft) north face of rock and ice. This is the biggest north face in the Alps. The Eiger has been highly publicized for the many tragedies involving climbing expeditions. Since 1935, at least sixty-four climbers have died attempting the north face. A railway tunnel runs inside the mountain, and two internal stations provide easy access to viewing-windows carved into the rock face. Two stations within the Eiger were Eigerwand (behind the north face) and at Eizmeer (behind the south face).