The Astris River was the river that ran through the Pardrayan steppes next to the Khamorth states of Khatrish and Thatagush. In fact, it divided what was once extreme western province of Videssos and was later ruled by the invading Kharmorth tribes and the rest of Pardraya.
During the reign of Krispos, the Astris served as the boundary between Videssian-held Kubrat and the Halogai and Thatagush. One of the larger towns to sit on its banks was Pliskavos, which was where the Kubrat War was concluded.
The Astris is based on the Danube River.