The Marble Mountains are a cluster of five marble and limestone hills located in Ngu Hanh Son District, just south of Da Nang city. All of the mountains feature cave entrances and numerous tunnels. Visitors can ascend to the summit of Mount Thuy. The location is popular with tourists due to the natural beauty of the landscape and the several Buddhist sanctuaries found here. The sanctuaries contain statues and relief depictions of religious scenes carved out of the marble.