Marble Mountains (Vietnamese: Ngũ Hành Sơn; lit. "five elements mountains") is a cluster of five marble and limestone hills located in Ngũ Hành Sơn District, south of Da Nang city in Vietnam. The five mountains are named after the five elements: Kim (metal), Thuy (water), Moc (wood), Hoa (fire) and Tho (earth). All of the mountains have cave entrances and numerous tunnels, and it is possible to climb to the summit of Mt. Thuy. Several Buddhist sanctuaries can also be found within the mountains, making this a noted tourist destination. The area is known for stone sculpture making and stone-cutting crafts. Direct rock extraction from the mountains was banned recently. Materials are now being transported from quarries in Quảng Nam Province.