Salisbury Plain is a
chalk plateau in central southern England covering . It is part of a system of chalk downlands throughout eastern and southern England formed by the rocks of the
Chalk Group and largely lies within the county of
Wiltshire, with a little in
Hampshire. The plain is famous for its rich
archaeology, including
Stonehenge, one of England's best known landmarks. Largely as a result of the establishment of the Defence Training Estate Salisbury Plain (DTE SP), the plain is sparsely populated and is the largest remaining area of
calcareous grassland in north-west Europe. Additionally the plain has
arable land, and a few small areas of
beech trees and
coniferous woodland. Its highest point is Easton Hill.