The island of Great Britain can be divided into two lowlands and highlands.
Lowlands covers the midland, southern and eastern England.
The most mountainous area is Scotland. It may be divided into three regions: the Highlands in the north, the Central Lowlands and the Southern Uplands. The Highlands of Scotland include Caledonian Mountains and Grampian Mountains, which are divided by the Caledonia Canal (Glen-Moore valley). In the Grampian Mountains we can find the highest British peak Ben Nevis. The Southern Uplands and the Cheviot Hill are situated on the border with England.
England is mostly rolling land, rising to the Uplands of the southern Scotland. The main mountain regions here are the Cornish Heights in the south-west England; the Pennines which is called the Backbone of England, the Cumbrian Mounts I the north, and the Lake District.
In Wales there are situated Cambrian Mountains with its highest peak Snowdon. CM covers the whole Wales.
The longest river is the Severn and the biggest river is Thames. Other rivers of British Islands are the Avon, the Cam, the Tyne, the Humber and the Trent. Many of the rivers are canalized and linked with other river systems in a complex system dating from the Industrial Revolution. Rivers are very important as source of energy.
The greatest number of lakes can be found in Northern Scotland and in the Lake District. The bigger British lake is Lough Neagh in Northern Ireland. The most famous lakes are Loch Ness and Loch Lomond.