It flows E.N.E as far as Yakutsk (62° N., 127° 40' E.), where it enters the lowlands, after being joined by the Olekma, also from the right.
Gold is washed out of the sands of the Vitim and the Olekma, and tusks of the mammoth are dug out of the delta.
The Altai, the still unnamed complex of the Minusinsk Mountains, the intricate mountain-chains of Sayan, with those of the Olekma, Vitim and Aldan all arranged en echelon - the former from N.W.
Altai, the upper (or Nizhne-Udinsk) and the lower (or ' Yeniseisk) taigas, and the Olekma region.
On the Lena and the Vitim there are steamers, and a small railway connects the Bodoibo river port with the Olekma gold-washings.