Dent de Lys, Mountain summit in Canton of Fribourg, Switzerland.

Dent de Lys is a mountain summit in the Bernese Alps rising to around 2000 meters, with slopes formed from sedimentary rock formations. Multiple hiking routes crisscross the massif and lead toward its peak.

On 25 March 1940, a roped party fell near the summit of Dent de Lys and three climbers died. The sole survivor, the priest Marcel Menétrey, devoted to Marguerite Bays, said he was saved by invoking her; she was beatified in 1995. Mortuary crosses bearing the victims' names still stand near the summit.

The summit's name links it to the lily, and the mountain also carries a religious memory: on 25 March 1940 a roped party fell near the top and three climbers died. The sole survivor, the priest Marcel Menétrey, devoted to Marguerite Bays, said he was saved by invoking her; she was beatified in 1995. Mortuary crosses bearing the victims' names still stand near the summit.

The summit is reached from the Col de Lys (1,783 m), which can be climbed from both the east and west sides, on foot or on skis. The final ridge section is exposed and fitted with chains fixed in the rock; hikers prone to vertigo should turn back before it.

This mountain appears in Ernest Hemingway's short story 'Cross Country Snow', giving it a place in literary history. This literary connection makes the summit interesting for readers of classic English-language works.