Mont Sujet, Summit in the Bernese Jura, Switzerland.

Mont Sujet rises to 1,382 meters above sea level in the Bernese Jura, featuring limestone formations typical of the Jura Mountains with rolling terrain and mixed forest ecosystems.

The ridge forms an anticline of the folded Jura, about 8 km long and at most 2 km wide, oriented southwest-northeast and set in front of the Chasseralkette. Its resistant Upper Jurassic (Malm) limestone layers are exposed in only a few places. Since 2015, systematic searches by scientists and meteorite hunters have recovered more than a thousand fragments of the rare Twannberg iron meteorite on the ridge; in 2016 a 66-gram H5 stone meteorite was found and officially named Mont Sujet.

The mountain reflects the bilingual nature of the Bernese Jura region, known as Spitzberg in German, representing the cultural bridge between French and German-speaking areas of Switzerland.

The ridge is reached on foot from Les Prés-d'Orvin, where a sculpture trail runs toward Lamboing. On the northeast slope near Les Prés-d'Orvin, two ski lifts serve alpine skiing in winter. The crest stretches about 4 km, so plan for an exposed walk between forested flanks.

The ridge is covered by the strewn field of the Twannberg iron meteorite; since 2015, systematic searches have recovered more than a thousand fragments. In 2016, a 66-gram H5 stone meteorite was found and officially named Mont Sujet.