Samtong natural springs, located in Naepo-ri, Cheorwon-eup, was so-named because water flows during all four seasons in its 0.5ha wide pond and is a center of the 2km radius migratory birds sanctuary designated and managed as Natural Monument No. 245 on July 10, 1973. Since the end of 9th century, residents existed at this site when King Gung-Ye of Taebong established a capital city here. It is located on a low hill site at the mid-point of Woeljung station via Cheorwon station. The 15 warm water springs out from basalt ground which keeps from freezing in the winter and never dries up even in a drought.

This place has been one of the famous paradises for white-nape cranes, hooped cranes and wild geese for over 300 years. After the Korean War, the rich old pine tree habitats and big trees have disappeared and the area was transformed into farmland. However, from mid-October to the following March, tens of thousands of migratory birds including cranes and wild geese fly over and stay for the winter. There are large and small reservoirs using the springs which supply water to 200 farmlands near the site.