It is not known exactly when the first fortifications appeared in Chernihiv. Sometimes researchers express the opinion that this happened not later than VII century. Still, these data are not confirmed by archaeological studies. However, already in the X century Chernihiv was fortified. The fortification consisted of a wooden wall filled with earth and a moat. These fortifications were erected at the end of the X century. Subsequently, the city developed and more fortified lines emerged, old ones were rebuilt.
