Before revision: Heather moorland Heather moorland on the North York Moors mainly consisting of Calluna vulgaris Heathland and moorland are the most extensive areas of semi-natural vegetation in the British Isles.
After revision: PK7/3/12Heather moorland Heather moorland on the North York Moors mainly consisting of Calluna vulgaris Heathland and moorland are the most extensive areas of semi-natural vegetation in the British Isles.