England comprises most of the central and southern two-thirds of the island of Great Britain, in addition to a number of small islandsof which the largest is the Isle of Wight. England is bordered to the north by Scotland and to the west by Wales. It is closer to continental Europe than any other part of mainland Britain, divided from France only by a 33 km (21 mi) sea gap, the English Channel. The 50 km (31 mi) Channel Tunnel, near Folkestone, directly links England to mainland Europe. The English/French border is halfway along the tunnel.
Much of England consists of rolling hills, but it is generally more mountainous in the north with a chain of mountains, the Pennines, dividing east and west. Other hilly areas in the north and Midlandsare the Lake District, the North York Moors, and the Peak District. The approximate dividing line between terrain types is often indicated by the Tees-Exe line. To the south of that line, there are larger areas of flatter land, including East Anglia and the Fens, although hilly areas include the Cotswolds, the Chilterns, and theNorth and South Downs.