The range is bounded from north-west by the Gulf of Naples, from north by the Sarno river plain, from east by the Metelliana plain of Cava de' Tirreni, and from south by the Gulf of Salerno. The rocks are of limestone formation, touching their highest altitude at 1,444 m with the Monte San Michele. At north is the popular Monte Faito, reachable through cable car from Castellammare di Stabia.