St Catherine’s Hill, Winchester, is a 58-hectare chalk grassland. It is a nature reserve managed by Hampshire & Isle of Wight Wildlife Trust. There are ramparts of the Iron Age hill fort cut into the 70m high hill, buried ruins of the Norman chapel that gives the site its name and several rectangular burial mounds along Plague Pit Valley, which mark the location of mass graves. It offers views over Winchester, the Itchen Valley and the surrounding countryside. As part of the management of the chalk grassland, cattle are used to help prevent scrub from building up.