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Many of the small fields are bound by drystone walls which are typical of the area.

Drystone walls are built without mortar, and their stability – they can stand for 200 years – is due to the skill of the craftsmen who place rough boulders and angular stones together.

Many drystone walls were constructed as part of the enclosure of open grazing. They were especially useful in areas too exposed for hedgerows to survive and where stones were readily available.

Most drystone walls are wider at the base than at the crown, and are often capped with coping stones. A typical wall has two outer layers of large, flattish stones enclosing an inner ‘heart’ of smaller, rounder stones. Often it is reinforced with ‘through bands’ of even larger, flat stones which can also be used as stiles.

The very dryness of a wall makes it more likely to endure wind and frost and to act as shelter for livestock as well as a boundary.