Tuul

The Tuul rises in the Khentii Mountains and winds west through central Mongolia before turning north to join the Orkhon. Willow woods grow along its banks, and its waters freeze through the long winter. Mongols call it Khatan Tuul, the “Queen Tuul”. The Secret History of the Mongols mentions the Black Forest of the Tuul as the place where Ong Khan of the Keraites had his palace.