Local charities are calling for action to stop horses being dumped and left for dead.
The horse was found by a dog-walker, with frost forming on her mane. She was still alive, and the dog-walker covered her with blankets. But the horse had to be put down when a vet arrived. Jim Lucas is from the RSPCA:
Cases of dead or dying horses being dumped in the East Midlands appear to be growing more common this winter. Four horses were found near Shirebrook in Derbyshire. One had a broken neck.
Another was found on a track in Calverton in Nottinghamshire - the mare had been in labour.
Janice Dixon started the Help for Horses charity out of her veterinary surgery in Rainworth near Mansfield, to try to help the situation. She puts the problem down to a reduction in the value of horses at the end of their lives, meaning owners now have to pay to have their dead or dying horse taken away.
The law says that all horses born since 2009 should be microchipped, or owners face a £5000 fine. Janice wants better enforcement of that law.
Meanwhile, the charities also continue to ask the public to look out for suspicious activity, to help stop more horses being inhumanely left to die.