Alp Anarosa is a high mountain pass at an elevation of 2.348m (7,703ft) above the sea level, located north of Splügen, in the Viamala Region in the Swiss canton of Graubünden.
Tucked away in the Swiss Lepontine Alps, the extremely narrow road to the summit is mostly paved. But the asphalt runs out completely at 2.325m, some 100m before the end. The last part of the climb is unpaved. The road is called Curtginatsch, the name of the main farmhouse after the end of the climb. The summit hosts a little parking lot, known as Tguma parkplatz.
The road to the summit is pretty steep, hitting a 13.8% of gradient through some of the ramps. Starting from Zillis, the ascent is 15.1km long. Over this distance, the elevation gain is 1.403 meters. The average percentage is 9.3%.