Mountains and hills of England the land rises to form the Cheviot Hills, which extend into Scotland and could probably be considered part of the Southern Uplands. They are included in Northumberland National Park, along with Kielder Water and the Kielder Forest. The North Pennines (an Area of Outstanding Natural Beauty, or AONB) lie south of Hadrian's Wall, and east of the Lake District, from which they are separated by the Eden Valley. These are younger rocks, mostly Carboniferous limestone, and the mountains are characterised by shallower slopes covered with moorland vegetation, culminating in Cross Fell at . South of this, the main line of
Mountains and hills of England East England, including East Anglia and London, is also predominantly flat. The underlying rock is chalk, and meaningful heights are only attained in the Chiltern Hills (Haddington Hill: ), the North Wessex Downs (Walbury Hill: ), the North Downs (Leith Hill: ) and the South Downs (which includes the chalk cliffs at Beachy Head and Seven Sisters). South of Bristol and Bath, the Mendip Hills (Black Down: ) are the first group of hills in South West England. The Purbeck Hills (and their continuation onto the Isle of Wight) line the south coast, and a number of other groups of