Estonian daredevil Jaan Roose to attempt 160-metre highline walk above Seoul

Estonian aerial athlete Jaan Roose is set to attempt a crossing of a 160-metre-long highline suspended 120 metres above central Seoul on Thursday, according to reports.

Roose, a three-time slackline world champion, plans to walk a narrow polyester ribbon strung between the Koreana Hotel and the Dong-A Media Center, a route that passes near the South Korean capital's well-known Gwanghwamun palace and square.

The attempt places Roose among a small group of athletes who specialize in highlining, a discipline that involves walking across a tensioned length of webbing strung between two elevated points, typically without a safety harness connected to the line itself beyond a leash in case of a fall.

Seoul's dense urban backdrop, with the highline positioned above one of the city's historic and heavily trafficked districts, is expected to draw public attention to the event. Gwanghwamun palace and the surrounding square are among the most recognizable landmarks in the South Korean capital.

Details on the exact timing of the attempt and any accompanying safety measures have not been fully specified, though highline crossings of this kind are typically planned in coordination with local authorities given the public setting.