Police in Hathersage are advising campers to remove valuables from their tents following thefts in the area.
Between 11am and 6.15pm on Monday, April 21, offenders entered a tent on a campsite on Birley Lane, Hathersage.
A Mammut sports jacket, a Sony Experia Z mobile phone and a wallet with cash were taken.
Between 10.30am and 6.30pm on the same date, offenders entered a tent and took a Samsung mobile phone from within.
PCSO Anthony Boswell, of the Hathersage Safer Neighbourhood Team, said: “I would encourage all campers not to leave any valuables in their tent while unattended.
“It only takes a few minutes for a criminal to enter a tent and search through belongings to steal.”
Anyone with any information about the incidents is asked to call police on 101 quoting crime reference 16405/14.