A class of later prehistoric enclosure found in the southwest of Britain, usually on sloping ground. The defining characteristics are the series of two or more broadly concentric earthworks bounding the site. The central areas are generally small, between 0.4 ha and 3.5 ha, although some have a range of annexes and appended structures. They usually have a single entrance and where excavated show evidence for domestic occupation. They were probably farmsteads occupied by pastoralist communities. Also known as hillslope enclosures.