Fa Daet Song Yang City is an ancient city located in Kamalasai District, Kalasin Province. At present, there are only the remains of clay bricks and a double moat that looks like a water bed. There is also Phra That Ya Khu, an oval city plan in Dvaravati style. But there is a two-story city believed to be caused by urban expansion. Some sandstone sema leaves have been excavated with some patterns, some are not, registered with the Fine Arts Department, 130 sheets.