Mountain peakFrance · FR
Dent de Crolles
The Dent de Crolles (2,062 m) is one of the most recognizable summits of the Chartreuse massif, a great limestone tooth raised above the Grésivaudan valley just northeast of Grenoble. The second-highest peak of the range after Chamechaude, it has the look of a giant molar from some angles — a perched syncline of Urgonian limestone whose broad summit is a sculpted plateau of lapiaz, the rock scored and fluted by water. On a clear day the view runs from the Belledonne spine to the distant white mass of Mont Blanc. What makes the mountain singular is what you cannot see: it is almost entirely hollow. Beneath the clatter of the surface lies one of Europe's great cave networks, with roughly 55–60 km of explored galleries and a vertical drop of more than 600 m. Pioneers such as Pierre Chevalier and Fernand Petzl worked here, and from 1944 to 1953 the Dent held the world depth record. Today it draws hikers to its summit via steep equipped passes, cavers to its many entrances, and anyone wanting a classic Alpine day-out with a real sense of place.