A 28-strong group of mountain rescue team members were called out to help two walkers who ended up lost in mist on Kinder Scout.
The call for help was made after a couple from Manchester set off on a walk from Upper Booth to Kinder Downfall, but as the day progressed the weather deteriorated and visibility was reduced to five metres.
On their return route from Kinder Downfall the couple lost their way.
Concerned that daylight would soon fade and fearful of becoming benighted the couple called the emergency services for help.
They were also worried about the early onset of hypothermia.
Buxton, Edale and Kinder Mountain Rescue teams all answered the call for help and the couple were located and escorted off the moor and back to Upper Booth.
Roger Bennett, of Buxton Mountain Rescue Team, said: “The couple made a sensible decision to call for assistance when they did.
“However, this indicates just how quickly the weather on Kinder Scout can change and walkers should be practiced in navigation to avoid such instances. The team also urges everyone to carry a torch and whistle at all times.”