“The What3words given gave a location on the South Ridge of Tryfan but mountain rescue’s preferred PhoneFind placed him at the foot of South Gully on Heather Terrace. It was established that he had fallen and possibly dislocated his knee. He was lightly dressed without warm clothing or waterproofs and dressed in black.”

https://www.grough.co.uk/magazine/2021/09/27/walker-in-eight-hour-rescue-after-suffering-serious-injuries-in-fall-on-tryfan#