The man, an 83 year-old Belgian, was part of a party plane-spotting on the popular "Mach-loop," a training circuit used by military aircraft. He had slipped and injured his ankle on a steep slope just below Bwlch Oerddrws near Dinas Mawddwy.
The man was attended by WAST paramedics, while Team voluteers carried up a stretcher and rigging equipment to lower the man down the slope.
Everyone was down off thew hill by 7:50 p.m. and the man was transferred to ambulance care for further hospital-based assessment and treatment.