A 60-year-old hiker experienced cardiac arrest while climbing Mount Hiyang in Goesan County, North Chungcheong Province, South Korea, on Tuesday morning. Emergency services received a report at 10:04 AM regarding the incident near Madangbawi Rock. The hiker, identified as A, was subsequently transported by helicopter to a nearby hospital for urgent medical attention. Details surrounding the cause of the cardiac arrest are currently unknown. Authorities are investigating the circumstances leading to the incident. This event highlights the potential risks associated with mountain climbing and the importance of preparedness and awareness. Further updates will be provided as they become available.