Son La, the fifth largest province in the country, is located in the northwestern region of Vietnam. Eighty percent of the province’s natural area is covered with mountains. It has two large plateaus also named Son La and Moc Chau, and an immense area of crop fields. The rest consists of valleys, high hills and mountains, Son La province borders Laos to the south The province is populated by various ethnic groups, including the Ma, H’mong, Dao, Muong, Kinh, Khmer, Tay, Thai, and so on. Son La has a temperate climate throughout the year.Tham Tet Tong is a complex of marvelous grottoes located only 1.5 km from Son La. Excursions to Tay Bac Mountains and bathing at Ban Mong Hot Springs are available. Visits to ethnic minorities hamlets are also popular.From Hanoi, driving along National Highway 6 for more than 300km, you reach the provincial town of the same name, Son La, on a plateau some 600m above sea level.