The River in the Amazon That Boils With No Volcano Near It

As a boy in Peru, Andrés Ruzo heard his grandfather describe a river deep in the jungle hot enough to boil anything that fell in. Everyone said it was a myth — rivers don't boil 400 miles from the nearest volcano. Then he trained as a geoscientist and went to find it.

by rbtholeAug 9, 2026
  1. How I found a mythical boiling river in the Amazon

    Ruzo's TED talk — the childhood legend, the years of doubt, and the moment he first felt the steam rising off Shanay-timpishka. Start here.

  2. Andrés Ruzo — the scientist who chased a story

    The geothermal researcher who became the first scientist permitted to study the river in 2011, and founded a project to protect it.

  3. The river that can cook you alive

    Averaging 86°C and peaking near boiling, the water kills anything that falls in. Ruzo's grim detail: the eyes go first, turning milky white in seconds.

  4. The Amazon's boiling river kills anything that enters

    A short documentary on the river as a place of pilgrimage for shamans — and the animals that wander in and are slowly cooked from the outside in.

  5. Solving the mystery of the boiling river

    National Geographic's Overhead podcast digs into the geology: not volcanism, but a vast hydrothermal system pushing deep, fault-heated water back to the surface.

  6. The Boiling River: Amazon's Hidden Mystery

    A cinematic film on the river's beauty and fragility — steam curling off the water at dawn, and the logging and development now closing in around it.

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