An accident that caused a ten mile back up on interstate 81 has now been cleared.
According to state police the driver of a pick up truck, pulling a camper down Christiansburg Mountain, lost control of the camper, causing the truck to overturn on its side.
The camper also overturned on its side.
It happened at mile marker 127 in Montgomery County around three this afternoon.
The accident blocked both lanes of northbound traffic.
The driver was not hurt.
The accident was cleared a little after six this evening.
All lanes are re-opened.