Um Tomo is a smaller, ruined, Khmer style temple contemporary to Wat Phu situated about 15km south of Champasak close to the bank on the opposite side of the Mekong.
There's not that much to see here except for a carving lined walkway, two smaller temple pavilions -- one very ruined and the other only moderately ruined. Nevertheless this is a nice site, in a copse of large trees squeezed between the Mekong and the rice paddies of nearby Ban Nakham Noi.
Opening Hours: Daily 08:30 to 16:30
How to get there: Travel info Boatmen in Champasak will propose this trip to you there and back including waiting time and with a stop off at Ban Wat Luang Khao on the way if you want. The trip takes about 1 hour downstream and 1.5 hours back on a very narrow long tail boat -- so don't move around too much. Try going early or late to avoid the worst of the midday sun during the unsheltered boat trip. You can also reach Um Tomo by motorbike heading south on the main road to Veun Kham for about 11km from the Champasak turnoff. The turnoff is not clearly marked, but ask around, the villagers know where you're heading. Then it's 2 to 3 km of well-packed dirt roads to where there's a sign leading the way. (Note no food or drink is available at Um Tomo).