A geology lesson by the sea
Along the coast of Yangnam-myeon, Gyeongju, columns of rock extend in strikingly different directions. Gyeongju City's heritage guide says the Yangnam columnar-joint formation was designated a Natural Monument on 25 September 2012. The formations show varied shapes associated with cooling volcanic rock.
Look for the fan
Beyond the renowned fan-shaped formation are horizontal, inclined and upright columns. Gyeongju's Padosori-gil map identifies Eupcheon Port, a suspension bridge, the viewing area, pebble paths and Haseo Port along the coast. Observe the rocks from designated walking paths, rather than entering protected coastal areas.
Plan for changeable conditions
The heritage location is a broader coastal zone, not a precise parking or trail-entrance address. Current trail closures, observation-deck hours, parking and fees were not confirmed in the sources checked. Verify conditions with Gyeongju City and signs on site before travelling.
What to notice
Compare the directions of the stone columns as you walk. The patterns make the coastline as interesting to study as it is to photograph.