Complex sentence: It was founded in 1765 as a planned settlement on a low plateau at Freuchie beside the river Spey at the northern edge of the Cairngorm mountains, about twenty miles south east of Inverness.
Split into simpler sentences: It was founded in 1765 as a planned settlement on a low plateau at Freuchie beside the river Spey. It lies at the northern edge of the Cairngorm mountains, about twenty miles south east of Inverness.