Kampong Thom is Cambodia's second largest province by area. Its capital is named Kampong Thom, a picturesque town on the banks of the Stung Saen River.The Sambor temple and Prei Kuk temple are the two main temples in Kompong Thom as well as other less significant Angkorian sites. Kompong Thom was a very powerful capital in Southeast Asia during the Funan period. Later on, during the French rule, the province was home to a large group named the Stieng, but they have long been assimilated into Khmer society. Kampong Pos Thom was the original name of the present called Kampong Thom. Because originally long time ago, at the dock of the Sen River next to a big natural lake, there was a big cave with a pair of big snakes inside. The people living around this area usually saw these big snakes every Buddhist Holiday.