England comprises most of the central and southern two-thirds of the island of Great Britain, in addition to a number of small islands of 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 sea gap, the English Channel. The Channel Tunnel, near Folkestone, directly links England to mainland Europe. The English/French border is halfway along the tunnel. Most of England consists of low hills and plains, with upland and mountainous terrain in the north and west. Uplands in the north include the Pennines, an upland chain dividing east and west, the Lake District, containing the highest mountains in the country, the Cheviot Hills across the Anglo-Scottish border, and the North York Moors near the North Sea. Uplands in the west include Dartmoor and Exmoor in the south west and the Shropshire Hills near Wales. 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 the North and South Downs. The largest natural harbour in England is at Poole, on the south-central coast. Some regard it as the second largest harbour in the world, after Sydney, Australia, although this fact is disputed (see harbours for a list of other large natural harbours). Climate England has a temperate climate, with plentiful rainfall all year round, it has a more mild climate than places at similar latitudes, for example Newfoundland in Canada, or Sakhalin in Russia. The seasons are quite variable in temperature, however temperatures rarely fall below −5 °C (23 °F) or rise above 30 °C (86 °F). The prevailing wind is from the south-west, bringing mild and wet weather to England regularly from the Atlantic Ocean. It is driest in the east and warmest in the south, which is closest to the European mainland. Snowfall can occur in winter and early spring, although it is not very common away from high ground. England has warmer maximum and minimum temperatures throughout the year than the other countries of the UK, though Wales has milder minima from November to February, and Northern Ireland has warmer maxima from December to