Two people and a dog on a camping trip had to be rescued after becoming bogged down in "extremely poor" weather.
The pair, in their late 20s, did not know where they were within Dartmoor National Park when they rang for help just after 02:00 BST, Devon and Somerset Fire and Rescue Service said.
They were found at 06:30 on moorland near Laughter Hole, suffering from slight hypothermia.
Poor network signal had made it difficult to pinpoint their location.
Ian Lowcock, one of the search managers for Dartmoor Search and Rescue, said two search parties were sent on to the moor and worked with police, the fire service and the ambulance service's hazardous area response team.
He said the man and woman were found "cold but otherwise OK" and it had been their intention to stay overnight on the moor.
"It is perfectly normal and reasonable to do that, people go out and camp in all weathers and actually there is a lot of pleasure to be had camping in bad weather," he said.
However, Tavistock Police said the pair's clothing and equipment had not been suitable and warned people to "come prepared for the worst" when camping in the national park.
One thing that stood out was that the clothing and equipment was not suitable for the weather. They also lost their tent and belongings in a flash flood due to camping too close to the stream.— Tavistock Police (@TavistockPolice) September 29, 2019
If you’re going to camp out on Dartmoor, come prepared for the worst!