The columnar joints were formed through the rapid contraction of basaltic lava as it cooled into uniform hexagonal shapes.
This site represents the geological history of the East Sea coastal region dating back to the Miocene epoch.
The name 'Jusangjeolli' translates literally to 'columnar jointing' in Korean geological terminology.
Unlike some other Korean coastal formations, these columns are located directly on a accessible beach level rather than atop high cliffs.
Gangdong Hwaam Jusangjeolli is a significant coastal geological feature in Ulsan featuring hexagonal and polygonal volcanic rock columns formed during the Tertiary period. The site showcases the solidification process of lava as it cooled along the shoreline. Visitors can walk along the rocky coastline to observe these vertical stone pillars up close. The formation is part of a larger stretch of dramatic volcanic coastline in the Buk-gu district. It serves as an open-air natural history site demonstrating local volcanic activity from millions of years ago.
The elevated viewing deck area provides a wide-angle perspective of the shoreline's rock distribution.
Wear sturdy, non-slip footwear as the volcanic rock surface is uneven and can be slippery near the water.
Check local tide tables before visiting to ensure the formation is not submerged during high tide.
Bring a windbreaker, as the coastal location is subject to strong sea breezes regardless of the season.
Do not visit during heavy rain or high-wind warnings, as the rocky terrain becomes hazardous.
Do not climb on fragile rock formations or remove stone fragments from the site to preserve the geological integrity.
