Nyaung Ohak and the Shwe Indein Pagoda are collections of Buddhist stupas dating back to the 17th and 18th centuries CE. Inle Lake is a freshwater lake located in the Nyaungshwe Township of Taunggyi District of Shan State, part of Shan Hills in Myanmar (Burma). It is the second largest lake in Myanmar with an estimated surface area of 44.9 square miles (116 km2), and one of the highest at an altitude of 2,900 feet (880 m). The people of Inle Lake (called Intha), some 70,000 of them, live in four cities bordering the lake, in numerous small villages along the lake's shores, and on the lake itself. The entire lake area is in Nyaung Shwe township. The population consists predominantly of Intha, with a mix of other Shan, Taungyo, Pa-O (Taungthu), Danu, Kayah, Danaw and Bamar ethnicities. Most are devout Buddhists, and live in simple houses of wood and woven bamboo on stilts; they are largely self-sufficient farmers. Most transportation on the lake is traditionally by small boats, or by som