At 7.35pm on Friday, July 1, the Edale Mountain Rescue Team were called to an incident on the Chatsworth Estate along with the East Midlands Ambulance Service.
A walker had collapsed while hiking in the grounds, and an air ambulance was quickly scrambled to the scene.
The Edale MRT said: “Unfortunately, despite the best efforts of the walker’s friends and the helimed crew, their life could not be saved.
“The team then evacuated the walker back to the road. Our condolences to the family and friends of the deceased.”