Chùa Đục - also known as Đỉnh Liêm Tự, or sometimes 'Chùa Không Sư' ('the pagoda without a monk') - sits on the western slopes of Núi Giếng Tiền, one of Lý Sơn's extinct volcanic craters, accessed by around 139 stone steps carved into the cliff face. Despite its ancient, mystical atmosphere, the pagoda is a modern construction, built starting in 2008 and completed around 2010.
The complex is built into and around the volcanic rock, incorporating three natural caves of varying size - the largest and central cave (roughly 65 cubic metres) serves as the main hall, housing Phật Tổ Như Lai, Địa Tạng Bồ Tát, and a shrine to the pagoda's first abbot; a smaller cave to the east holds the Three Buddhas (Tam Thế Phật); and the smallest cave, Viên Giác, to the west, is used by monks for meditation.
The centrepiece most visitors come for is a 27-metre white Quan Âm statue on the upper terrace, facing out to sea. Local belief holds that the statue protects the island's fishing communities from typhoons - a significant concern in a region that sits directly in the path of storms moving through the South China Sea.