Col du Sanetsch is a high mountain pass at an elevation of 2.242m (7,356ft) above the sea level, located in Switzerland. The pass, in the western Bernese Alps, links Gsteig (canton of Berne) and Sion (canton of Valais). Despite the information published in wikipedia (it says the road has a dead end), the road to the pass from Sion goes further to the Lac de Sanetsch, for 5,5 km.
The top of the pass includes views of the Diableret glacier. The Sanetsch Pass (called Col du Sanetsch or Col de Sénin in French), separates the massif of the Diablerets (west) from the massif of the Wildhorn (east).
The surface of the road is asphalt (in very bad conditions), and chains or snow tyres can be required anytime. It suffers the harsh meteorological conditions of the area every winter. The road to the summit starts with a little steep through vineyards, but suddenly the environment becomes forest and waterfalls. The last part of the climb includes a tunnel, with a length of 800m. It’s extremely dark and there’s just a little bit of light inside. The tunnel – high, in the middle of no-where – has automatic light sensors! It is long – 800metres – and wet. But has a few openings for views …. or to hide from cars.