Jusangjeolli, Columnar jointing cliff in Jungmun, South Korea.
Jusangjeolli is a cliff formation composed of dark red hexagonal stone columns along the southern coast of Jeju Island. These pillars rise roughly 20 meters above the ocean and create a continuous geometric pattern stretching across the shoreline.
The rock formation developed when lava from Hallasan Mountain flowed into the sea and cooled rapidly, creating these hexagonal columns. This geological process occurred thousands of years ago and reveals Jeju Island's volcanic past.
Local fishermen gather at the cliff during specific seasons to catch various fish species, continuing traditions passed through generations on Jeju Island.
Visitors can view the rock formation from wooden observation platforms positioned along the coast. Early morning and late afternoon light works best for observing and photographing the columns clearly.
Each of the over 40,000 stone columns has a slightly different size and depth, giving the cliff a natural irregular pattern. These variations resulted from different cooling rates during the solidification process thousands of years ago.
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