The Valtellina cuts a broad swathe down the Adda valley, where villages and vineyards hang precariously on the slopes of the Orobie Alps. The steep northern flank is carpeted by Nebbiolo grapes, which yield a light red wine. Both body and alcohol content improve with altitude so generations of Valtenesi built upwards, carrying the soil in woven baskets to high mountain terraces. Their reward: a DOC classification for Valtellina Superiore since 1968. In Sondrio, it’s possible to visit the cellars of Arpepe and, in Chiuro, Nino Negri.