Avarga Toson is composed of two sites: Lake Toson and Avarga springs. The whole is located Northwest sum of Delgerkhaan, in the province of Khentii, 1300 metres (4265 feet) above sea level.
Lake Toson stretches on 300 metres (984 feet) long and 250 metres (820 feet) wide. The water comes from an underground cold source, rich in minerals notably carbonate. The mud on the banks of the lake has the same composition as the mineral water of the lake. The whole is renowned for its therapeutic values, notably for dermatological and cardiovascular diseases.
Avarga is a cold spring located 11 kilometres (6,84 miles) Lake Toson, Northwest Mount Kherlen - Toono, in the Avarga Valley. The water is very rich in minerals too and is recommended for digestive system diseases.
Near the source, you can also see the ruins of Genghis Khan's Aurig Palace.
The whole complex is protected since 1998.