Olyokma River
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The Olyokma River or Olekma River (Олёкма) is a tributary of the Lena in eastern Siberia. The river is approximately 1,320 km long.
The Olyokma rises in the south of the Yablonovy Mountains, west of Mogocha. It flows north through remote terrain before joining the Lena near Olekminsk.