Police say a pervert exposed himself near the children's play area at Shipley Country Park.
Derbyshire police say the man exposed himself to a woman who was walking in the country park close to Heanor.
The man is reported to be in his late 20s, around 5ft 8in and have brown hair.
He was wearing brown jogging bottoms and a dark hoodie at the time, it is claimed, DerbyshireLive reports.
This incident reportedly happened between 5.45pm and 6.45pm on Friday, March 29, but officers are only now appealing for information.
A police spokesperson said: “Did you see anyone matching this description, or do you have any information which could help officers with their enquiries? If so, please get in touch.”
Members of the public can get in touch by calling 101 quoting reference number 19*174979, or by calling Crimestoppers anonymously on 0800 555111.
