Motorist hurt in third rock incident at Glynllifon
A 22-year-old man has been hurt and his car was written off after a third incident where a rock has been found in the middle of a road, said North Wales Police.
The man's car hit the rock opposite Pont Plas Newydd on the A499 road at Glynllifon in Gwynedd on Tuesday.
It follows two other incidents where large stones have been found in the road.
Police are not sure if the rocks have been put there deliberately.
The driver of the car, who suffered minor injuries, was taken to Ysbyty Gwynedd hospital in Bangor after an ambulance was called to the scene following the crash at 18:45 GMT.
PC Trystan Bevan said: "At present we are keeping an open mind as to whether the rock was deliberately left in the road or if it has fallen off a back of a truck.
"However large grass verges are on either side of the road and the rock is now being examined as part of our investigation."
Witnesses are asked to call police on 101.