The UK has over 17,000 km of coastline. The western and northern coasts are very indented with many fjords, while the eastern and southern coasts are gentler and sandier. The land slopes generally from northwest to southeast. Most of the mountains are located in northern, western and central parts of Great Britain and can be divided into the Highlands of Scotland, Southern Uplands of Scotland, Pennines, Cambrians, and Brecon Beacons. The highest peaks are Ben Nevis in Scotland and Snowdon in Wales.