Police issued a warning to outdoor fans after two cars were broken into near a popular climbing crag.
Derbyshire Constabulary said visitors should think about leaving valuables at home after the thefts near Stanage Edge in the Peak District.
A sat-nav unit, cash and jewellery were taken from a Hyundai i10 parked at Bole Hill, and a Renault Kangoo parked at the Dennis Knoll was targeted by thieves, who took a laptop and a camera.
Police also appealed to the public for information on the crimes, which are believed to have happened between 11am and 8.30pm last Saturday, 1 September.
PCSO Anthony Boswell of the Hathersage safer neighbourhood policing team said: “We would like to remind motorists always to think twice about what you need to take with you when visiting somewhere remote, and to avoid leave anything valuable in your car.
“It is always better to take these items with you but if you must leave them inside your vehicle, then make sure they are out of sight.”
Anyone with any information about these incidents is asked to contact at Derbyshire police on 101, the non-emergency number or call Crimestoppers anonymously on 0800 555 111.