It happened at Moonpenny Park yesterday evening.
Firefighters were called out to a blaze at Moonpenny Park in Dronfield last night.
The fire-which is thought to have been started deliberately-was extinguished at 7.40pm.
19:40 @DronfieldOnCall attended a report of a fire outside on #MoonpennyPark #Dronfield. This was a fire in a densely wooded area; #Firefighters used one main line to extinguish the fire. Reported to @DerbysPolice as believed deliberate ignition— Derbyshire Fire & Rescue Service (@DerbyshireFRS) April 25, 2019