Geographically, the island of Great Britain is generally divided into two major regions: the uplands and the lowlands, with the uplands lying to the north-west of a rough line running from Devon in the south-west of the island, to the River Tees in Yorkshire. The majority of England lies within the lowland side of the divide, marked by bucolic rolling hills and fertile plains. However, England also includes substantial upland territories, including the striking Pennines, the beautiful Cumbrian Mountains (location of the famous Lake District), and the picturesque Cotswolds in southern England.