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❄️ Omiwatari of Lake Suwa

Science & Nature Japan Asia

❄️ Omiwatari of Lake Suwa
Divine ice ridges and Japan's oldest climate record


🕐 2 min read · Updated 2 Apr 2026 at 19:01
📋 Fast Facts
  • Lake Suwa, Nagano Prefecture, Japan (36.048°N, 138.084°E)
  • Natural phenomenon: pressure ridges on frozen lake surface
  • Occurs during winter freeze-thaw cycles; frequency declining due to climate change
  • One of the world's longest continuous natural records, spanning over 1,200 years

The Omiwatari (御神渡り), or "God's Crossing," is a natural phenomenon occurring on Lake Suwa in Nagano Prefecture, Japan ...

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