 In contemporary sources, the city was called Holbon fortress(홀본성) in the Gwanggaeto Stele and Heulseunggol fortress(흘승골성) in Records of the Three Kingdoms.During the North-South States Period in Unified Shilla, it was recorded as Jolbon fortress(졸본성).During Goryeo period, according to Goryeosa, it was called Oros mountain fortress(오로산성) or Ura mountain fortress(우라산성).