Yaik

Yaik or Ural -- was held by a community of these Free Cossacks, and no one, whether Christian or Tartar, was allowed to pass through their territory without their permission.

Russia Donald Mackenzie Wallace 1880

Relays of horses were prepared for them on the road, they travelled night and day, and thus passed through the Comans 'country lying between the Dnieper, the Tanais, the Volga, and the Yaik, frequently having to cross the frozen rivers, and finally reaching the court of Prince Bathy on the frontiers of the Comans' country.

Celebrated Travels and Travellers Part I. The Exploration of the World Jules Verne 1866