A 30-year-old man was attacked by two men who caused him neck, arm and back injuries.
The assault, which happened on Wednesday, February 14, between 10pm and midnight, is believed to have taken place on a footpath connecting Dinting railway Station to the A57 in Glossop.
The two men are thought to be taller than 5ft 7ins tall and to speak with Manchester accents.
If you have any information call DS Christopher Simcock on 101 quoting reference 18000151024.
Alternatively, send him a message online through the Contact Us page of the website, www.derbyshire.police.uk.
You can also call Crimestoppers anonymously on 0800 555 111.