Katun, Mountain river in Altai Republic, Russia
The Katun is a mountain river in Altai Republic, Russia, running 688 kilometers from Mount Belukha northwest before meeting the Biya River. It carves deep valleys, passes through changing landscapes, and carries different shades depending on the season and glacier melt.
The waterway originates from the Gebler Glacier at 2,300 meters (7,500 feet) and has shaped the valleys of the Altai Mountains over millions of years. Over time it became a key axis for settlements and connections across the mountains.
The name comes from the Altai language word for woman, pointing to the importance this waterway has held for people here over centuries. Small communities live along the banks and know its character well.
The waterway freezes from late November to mid-April, while summer brings chances for rafting and visits to spots like Chemal or Manzherok. Water levels and temperature vary greatly with the seasons, so checking conditions before a trip helps.
The water color shifts with the seasons, from milky white during glacier melt to turquoise tones in autumn. These changes come from varying mineral content and suspended particles that refract light differently.
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