Cna originates from two small streams near the village of Verhotsene sixty kilometers to the south-east of Mr. Tambov. Flows from south to north across the Tambov region and the eastern part of the Ryazan region. To its confluence with the river Moksha, in the north-east of Ryazan, its length is 450 kilometers. Near the city of Tambov, it splits into several channels, which were washed several islands before, but now are only one remains, the largest Island – El Dorado. There are legends associated with the river Tsnoy. One of them told A.
Sohranskim and published in the newspaper, "The City on the Tsna." According to this legend, a woman named Mordovian Cna was unable to overcome the shame of his betrayal Sampura husband, which led to their native land Mordvin and Russian hordes of enemies. Grief she, bleeding tears, turned into a river a quiet, gentle and sad, as she female share. So the legend explains the name of the river, but Historians believe that there are two options Cna origin of the word. Some suggest that it arose from the Old Slavic "Desna", "Gums". As a result of phonetic change "Desna" (Dsna, Tsna) became "Tsnu" and later in the "Tsnu." There are proponents of the Finno-Ugric origin of the word Cna (muddy, muddy). Much remains mysterious and outstanding in our seemingly peaceful and quiet Tsna. There is still no answer as to why the channel of the river near the town left Beach on 12-14 meters higher than the right? After all, for all the rivers of the Northern Hemisphere pattern must be different.