Kalchik

The Kalchik (Кальчик) is a river in the Donetsk Oblast of Ukraine. It flows from Listvanka into the Kalmius, which it enters near the city of Mariupol. Supposedly it was the scene of the famous Battle of the Kalka River between the Mongol Empire and Kievan Rus' in 1223. It was also the scene of a smaller battle during a Mongol civil war in 1381