The Aldan River (Roushie: Алдан) is the seicont-langest tributary o the Lena River in the Sakha Republic in eastren Siberie. The river is 2,273 km (1412 mi) lang, o which aroond 1,600 km (994 mi) is navigable. It wis pairt o the River Route tae Okhotsk. In 1639 Ivan Moskvitin ascendit the Aldan an Maya Rivers an crossed tae the Ulya River tae reach the Sea o Okhotsk.
