- Passo Nigra
Infobox Mountain Pass
Name = Passo Nigra
Photo =
Caption =
Elevation = 1688 m
Location = Bolzano-Bozen, ITA
Range =Dolomites
Coordinates = coord|46|27|21|N|11|25|9|E|region:IT_type:pass
Topographic
Traversed by =Passo Nigra (1688 m) is a high
mountain pass in theDolomites in the province of Bolzano-Bozen inItaly .It connects the
Tiers valley withPasso di Costalunga . The pass lies below theCatinaccio massif and borders on theSciliar Nature Preserve. The pass road was built in 1957 and has a maximum grade of 24%, making it the steepest pass in Italy. It is nevertheless open year-round.References
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