Geography of the United Kingdom is the study of the physical features of the land and the ways people have used and changed them. The United Kingdom is an island country, made up of England, Scotland, Wales and Northern Ireland, as well as hundreds of other islands. England is the biggest and most populated part of the UK, and it is made up of mountains, valleys, lakes and forests. Scotland is to the north and is full of hills and valleys, while Wales is in the west and is mainly made up of mountains and moorlands. Northern Ireland is the smallest and least populated part of the UK, and it has large areas of lush green hills and valleys close to the coast.