The Trugberg is a mountain in the Bernese Alps in Switzerland. It is located above the Konkordiaplatz where the névé of the Jungfraufirn on the west side and the Ewigschneefeld on the east side converge to form the Aletsch Glacier. The Trugberg lies south of the Mönch. In 1841 a group of explorers including Louis Agassiz aimed at the Jungfrau. But having arrived at the Konkordiaplatz, where a large number of mountains meet, Agassiz set his sights on the wrong peak. When finally persuaded of his error, he named the mountain Trugberg, meaning Deceitful Mountain. The Trugberg was first climbed 13 July 1871 by Dr. Emil Burckardt from Basel, with the two local guides Peter Egger and Peter Schlegel. The route they took was by the east flank.