A 27-year-old woman was assaulted and raped on June 13 after a man lured her to Chalvey Recreation Ground.
The man approached her in Slough High Street and began talking to her whilst walking with her to the Esso garage to buy some drinks.
They then walked to Chalvey Recreation Ground at around 10am where the man raped the woman.
The police are appealing for witnesses and describe the attacker as a Somalian man, aged in his twenties, 6ft 2ins tall, with a medium build and a bowl afro hair cut.
He was wearing a baby blue Adidas jacket with a zip up the front and white stripes down the sleeves and ‘Somalia on the back in white, also a navy blue t-shirt underneath with a circular emblem on the chest.
He also wore faded mid-blue jeans and a small black bag which he wore across his body.
Investigating officer, Detective Inspector Emily Evans, based at Slough police station, said: “This is clearly a very distressing and upsetting incident, and the victim is being supported by our officers at this time.
“It is really important that we find out as much information as possible about this offence, so I would ask anyone who has any information about it at all, however unimportant it may seem, to come forward.
“Your information could be key to us locating this offender, so please get in touch if you think you can help.
“You can call us on 101, quoting reference number 43210258367. Alternatively, you can contact the independent charity Crimestoppers anonymously on 0800 555 111, or make a report online.
“Members of the public might see an increased police presence in the area while we investigate this offence. If you have any concerns or questions at all, please don’t hesitate to approach our officers.”