Cava de' Tirreni is a city and comune in the region of Campania, Italy, in the province of Salerno, 10 kilometres northwest of the town of Saler…Cava de' Tirreni is a city and comune in the region of Campania, Italy, in the province of Salerno, 10 kilometres northwest of the town of Salerno. It lies in a richly cultivated valley surrounded by wooded hills, and is a popular tourist resort. The abbey of La Trinità della Cava is located there.