King Charles has been visiting the Flow Country of Caithness and Sutherland, which covers one of the world's most extensive blanket bog systems.

A vast expanse of the Highland's Flow Country was awarded the designation earlier this month.

Scotland's vast Flow Country is the focus of a bid to become a new Unesco World Heritage site.

The road-to-rail vehicle came off the track between Forsinard and Altnabreac in Caithness.

The huge expanse of peatbog, lochs and bog pools in Caithness and Sutherland is twice the size of Orkney.