π°π· Hantangang River Jusangjeolli-gil (Cheorwon Columnar Joint Cliff Trail)
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Location
Overview
Hantangang River Jusangjeolli-gil is a 3.6 km cliffside plank walkway (jandΠΎ, about 1.5 m wide) clinging to the gorge walls of the Hantan River in Cheorwon, Gangwon Province, and a signature site of the Hantangang UNESCO Global Geopark. It lets you walk right against and out over the columnar-jointed basalt cliffs formed by cooling lava, with a glass-floored sky observatory jutting over the river for a dizzying view straight down to the water.
Highlights
A 3.6 km cliff-hugging plank path threading between rock walls and open air β one of Korea's most striking cliff walks
Glass-floored sky observatories (Sundam / Hantangang Sky observatory) that let you look straight down to the river below
Hexagonal columnar-joint basalt cliffs of Sundam Valley, the core geology of a UNESCO Global Geopark
One-way route between Sundam and Deureuni gates, about 1.5 hours, with roughly 10 rest-and-view shelters
Free shuttle bus between the two gates on weekends and holidays, so you can walk it one-way without doubling back
Good to know
SafetyThe walkway is a steel deck that becomes very slippery when it ices over in winter; snow is cleared but ice remains. Wear anti-slip shoes and hold the rail to avoid falls.
SeasonOperation is suspended during heavy-rain advisories and bad weather. Check same-day status before going (Sundam ticket office 0507-1431-2225).
RulesClosed on Tuesdays and on Jan 1, Lunar New Year's Day, and Chuseok day. Pets are not allowed inside β confirm dates and conditions before you go.
RulesThe last-entry time is earlier than the closing time and varies by season. Since the 3.6 km one-way walk takes about 1.5 hours, arrive with a buffer rather than near cutoff.
SafetyDo not lean over the railing or run on the narrow path. The route runs high along the gorge, so those with a fear of heights should not push themselves on the glass-floored platforms.
