The Marble Mountains are a group of five limestone and marble hills in Ngu Hanh Son District. They are a popular day trip from Hoi An, located just 20 kilometers north of the city. The mountains' sheer, porous limestone is punctuated by caves and tunnels, which are fitted with spectacular Buddhist and Hindu shrines. Only Mt. Thuy is accessible to tourists, with its highest summit and stunning, panoramic view of the coast, Da Nang, and the other Marble Mountains. At Hidden, we aim to equip you with all the knowledge you will need to fully appreciate this popular day trip.