A man had to be rescued from a Snowdonia peak after realising he had the wrong map with him - of Scotland.
He had been preparing for a challenge walk on the 3,262ft (994m) Glyder Fach in Snowdonia when he tripped and fell, smashing the screen on his phone on which he was using a navigation map.
He had to call for help when he realised the only paper map he had with him was of Scotland, reports Manchester Wired.
Members of the Ogwan Valley mountain rescue team helped him to safety. A spokesman for the group warned against relying on electronic applications in the mountains.
Chris Lloyd told the BBC: "Basically he was depending on an electronic tracking system which he then dropped and the screen broke.
"People should have a paper map of the correct area, and by all means use the electronic equipment to check your co-ordinates, but don't depend on it."
He added: "He never had a paper map of Wales with him, only a map of Scotland, and he was totally dependent on using the electronic device to find his way, so when it broke he was stuck."
Couple rescued from Snowdonia by RAF helicopter after walking without map