Where Lava Columns Lie Down — Gyeongju's Yangnam Columnar Joints
Early in the morning at Eupcheon Port in Yangnam-myeon, Gyeongju, the sound of waves striking the breakwater taps steadily at your ears. A salty sea breeze brushes past your nose, and at your feet black basalt columns lie on their sides like a stacked woodpile. Touch them and the surface feels rough rather than smooth, and the wind slipping between your lips leaves a faint taste of salt behind. These strange stone columns are the Yangnam Columnar Joints of Gyeongju, designated Natural Monument No. 536 fourteen years ago, on September 25, 2012.
At a glance: the Yangnam Columnar Joints sit along the coast of Eupcheon-ri, Yangnam-myeon, Gyeongju. By KTX, it takes about two hours and ten minutes from Seoul Station to Singyeongju Station, then roughly another fifty minutes by car to reach the site. Travelers relying on public transit can take city bus No. 150 from downtown Gyeongju and get off at the Eupcheon Port stop, though buses run only every thirty minutes to an hour, so it helps to check the schedule beforehand. The coastal walking trail known as the Wave Sound Road, running 1.7 kilometers from Eupcheon Port to Haeseo Port, is fitted with a deck path, observation points and a suspension bridge, and a round trip comfortably takes two to three hours. Parking at the Eupcheon Port public lot is free.
There is a date-driven reason to walk this trail today. The Yangnam Columnar Joints were designated Natural Monument No. 536 on September 25, 2012, which makes today exactly the fourteenth anniversary of that designation. Late September, when the summer heat has eased and the sea breeze turns cool, is also when the body feels lightest for a shadeless, hours-long walk along the coastal deck.
Why the columns lie flat comes down to the direction in which the lava cooled. Columnar joints form when hot lava contracts as it solidifies, splitting into polygonal columns that develop into pillar shapes; at places like Jisatgae on Jeju Island or along the Hantan River, those columns typically stand upright. At Yangnam, however, the lava cooled in a different direction, so the columns lie on their sides in a stacked-log formation, with some tilted and others curved outward like an open fan. Korea's Heritage Service describes the site as having columnar joints that developed on a large scale in a horizontal direction, including unusually fan-shaped formations, and the designated area covers more than 130,000 square meters (Korea Heritage Service portal, https://www.heritage.go.kr/heri/cul/culSelectDetail.do?ccbaCpno=1363705360000).
Eupcheon Port, at the start of the Wave Sound Road, has long been a small fishing village that lived off squid and octopus, and murals depicting residents' working lives now line the walls along the breakwater. Passing a fisherman mending nets, the briny smell of the sea lingers on the nose, and the sound of waves breaking on the rocks trails along as a constant backdrop throughout the walk.
After taking a photo in front of these strange, reclining stone columns, it is natural to wonder what moments other visitors captured along the same path. Anyone wanting to swap that kind of information in real time is welcome to look up the Korea Tourism Times open chat room. The columns the waves shaped have lain in place for fourteen years, but the steps you take across them today will never come again.