The man, said to be in his twenties, who crashed while riding a quad bike does not have life-threatening injuries a spokesman for the Welsh Ambulance Services said.
The crash happened on Bryn Brithdir in Oakdale Business Park near Blackwood.
The man was taken to the Royal Gwent Hospital in Newport.
A FIRE CREW helped a quad bike rider who overturned on a roundabout last night.
The firefighters from Aberbargoed were called at 9.15pm after the accident in Oakdale and gave the rider emergency treatment.