Passo Nigra is a high mountain pass at an elevation of 1.688m (5,538ft) above the sea level, located in the Dolomites in the province of South Tyrol in Italy.
The road over the pass, also known as Nigerpass, is asphalted. It links Tierser Tal and the Karerpass. It was built in 1957 and has a maximum grade of 24% (even if sign says 27%). It’s one of the steepest pass in Italy and is nevertheless open year-round.
To reach the summit, starting from Prato all'Isarco, the ascent is 24.4 km long. Over this distance, the elevation gain is 1.355 meters. The average percentage is 5.6 %.