ALDAN RIVER

The 'Aldan River' () is the second-longest tributary of the Lena River in eastern Siberia. The river is 2,273 km (1412 mi) long, of which around 1,600 km (994 mi) is navigable.
It rises in the Stanovoy Mountains southwest of Neryungri, then northeast past Aldan and through Tommot, Ust'-Maya, El'dikan and Khandyga before turning northwest and joining the Lena near Batamay.
The river's main tributaries are the Amga River, Uchur River and Maya River. Its basin is known for gold and for Cambrian fossils.