Known locally as Wat Oubmong, this late 9th century Bakheng-style Khmer temple lies on a promontory at a bend in the Tomo River, about 11 kilometres south east of the Wat Phu Champassak temple complex on the left bank of the Mekong River. Believed to have been the female counterpart to the main sanctuary honouring Shiva at Wat Phu and an important part of the symbolic planning of the landscape, Tomo temple was renovated during the Angkor period, attesting to its significance to the Khmers. Surrounded by a laterite wall, the temple incorporated two entrance buildings or gopuras, to the south west and north west respectively, from which flights of steps led down to the river. Much of the south west gopura (a 12th century structure) still remains, but its north west counterpart has collapsed and the main sanctuary has long since disappeared. A particularly beautiful mukhalinga (human-headed linga) may still be seen within the south west gopura.