Frozen north: Scotland in pictures

Early morning commuters find it slow going

Some roads were closed by police

Aberdeen Airport was also shut for a time

An Inverness to Edinburgh train derailed at Blair Atholl

Passengers were stranded as services had to be cancelled

Non-urgent ambulance journeys were cancelled in the north-east

A Shetland to Aberdeen ferry had to be re-routed to Invergordon

Ferry passengers were relieved to reach dry land after spending an extra night on board

Snow and ice has also brought down power lines

300 schools were closed across the country