Police investigating the rape of a woman walking her dog in Barnsley hope an appeal on the BBC's Crimewatch programme can help trace her attacker.
The 50-year-old victim was raped on the Trans Pennine trail, near Elsecar Reservoir, at lunchtime on 24 June.
Tuesday night's appeal featured a reconstruction which detectives hope will prompt new information.
Det Con Samantha Thomas said: "The smallest piece of information could help towards finding this suspect."
Near the scene of the attack there are several bridle paths which provide access to local beauty spots including Elsecar Heritage Centre, Elsecar Park and Elsecar Reservoir, police said.
The area is popular with walkers, and police believe there could have been many people around at the time of the rape.
Ms Thomas said: "I hope that this reconstruction will help trigger people memories and help catch this man.
"He is dangerous and used force to carry out such a serious attack."