SOS: Extreme Rescues

A young hiker gets trapped on an icy ledge in sub-zero conditions, rescuers hunt for walkers lost in fog and a man risks heatstroke after a mountain climb on the hottest day of the year.

It takes the skills, local knowledge and teamwork of multiple emergency and rescue agencies when a woman falls in a notorious part of the Ogwen Valley. Plus, a teenage boy is missing on a mountainside in pitch darkness.

A huge influx of visitors in summer ramps up pressure on already-stretched emergency teams. In the mountains, one volunteer rescuer responds to two separate emergencies on the same mountain in just 24 hours.

A woman scattering her father's ashes on his favourite mountain needs help after falling, a man with dementia is lost in the forest; and a girl is stretchered down the mountainside.

A day trip flips from epic to nightmare for a Londoner lost on Tryfan with no way to get help, a man falls near a remote waterfall and a holidaymaker drifts out to sea in a dinghy.

Multiple teams join forces to find a missing person; an amazing coincidence aids a walker who collapses with hypothermia in a storm; and a wrong turn puts young friends in danger.