This ancient town is a on Highway No. 214 (Kalasin-Roi Et). From Kalasin, drive for 13 kilometres to Kamalasai, then turn right and drive for 6 kilometres. The present location is Ban Sema, Tambon Nong Paen. There is evidence of a settlement in prehistoric times, the area flourishing during the Dvaravati period circa the 13th-15th Buddhist century. The layout of the town is like a heart-shaped stone that defines a temples boundary. There are two rows of moats. Ruins have been found inside and outside the town area. The most complete ruin is Phra That Yakhu, a brick pagoda. Sandstone temple markers with and without designs have been found here and are now housed in Wat Pho Chai Semaram in the village and in the Khon Kaen National Museum. In addition, amulets and tobacco pipes made of fired clay and bronze were unearthed here.