Grotte d’Orjobet Mont Salève near Geneva Haute Savoie France Cave

Grotte d’Orjobet Mont Salève near Geneva Haute-Savoie France Cave: https://www.google.com/maps/place/Gro... The Grotte d’Orjobet is a spectacular natural cave on the steep slope of Mont Salève in France (Haute-Savoie department), just south of Geneva. It functions as a monumental rock tunnel. Hikers traverse this “stone cathedral” on a steep ascent via man-made steps. Geology and History • Naming: The cave was discovered in the late 18th century by the Genevan naturalist and Alpine pioneer Horace-Bénédict de Saussure. He named it after his local guide, François Orjobet. • Development: As early as 1905, the Geneva section of the Swiss Alpine Club (SAC) equipped the chimney with steps carved into the rock, staircases, and wire ropes to make the ascent possible for hikers. • Erosion: The cave is a large vertical chimney in limestone formed by karstification and erosion. It is illuminated by daylight through natural rock windows. Hike Overview The direct ascent and descent are classified as a difficult mountain hike. It requires good physical conditioning and sure-footedness. Parameters Details Start & End Point Le Coin hiking parking lot in Collonges-sous-Salève (approx. 660 m) Distance (round trip) approx. 3.5 kilometers Elevation gain approx. 450 meters of elevation gain and loss Walking time approx. 1 hour 40 minutes Best time of year March through October (often icy and dangerous in winter) Route & Highlights 1. Forest Ascent: From the Le Coin parking lot, the Sentier d’Orjobet winds steeply and rocky through the shady forest up to the base of the rock face. 2. Crossing the Cave: You enter the cool cave and climb up the SAC steps inside the mountain. A handrail provides support on the damp rock walls. 3. Plateau and View: At the upper exit of the cave, you soon reach the alpine meadows of Les Crêts. From there, a magnificent panorama opens up over the Lake Geneva basin, the Jura Mountains, and Mont Blanc. 4. Extension (Geological Nature Trail): The tour can be extended into a long loop hike (approx. 9–11 km) along the ridges of the Salève. Along the way, you’ll pass the Trou de la Tine (a deep chasm) and the spectacular rock ledge passage known as the Vire de la Corraterie. Important Safety Instructions • Risk of slipping: The limestone steps inside the cave are constantly damp due to high humidity and are extremely slippery. Sturdy hiking boots with a good grip are required. [, 2] • No headlamp needed: Since the cave is illuminated by large openings, artificial light is not strictly necessary. However, it never hurts to carry a small flashlight in your backpack. [1] • Admission: Access to the cave is free and open year-round. However, in case of snow, ice, or heavy rain, the route should be strictly avoided due to the acute risk of slipping and falling.