Glamorgan - Geography

Geography

Glamorgan divides into three distinct and contrasting geographical areas. To the south east is a gently undulating limestone plateau, virtually coterminous with the modern county borough of Vale of Glamorgan, mainly comprising farmland and small villages stretching from Porthcawl to Cardiff. The lowlands are geographically the best environment for agriculture of the three areas. Settlements in the area included Cardiff, Barry, Bridgend, Cowbridge, Penarth and Porthcawl.

The northern part of the county is a mountainous area, dissected by deep narrow valleys. At the southern edge of the Brecon Beacons, the simple geological structure of Old Red Sandstone gives way to Carboniferous rocks; limestone, shales and millstone grit. In the 19th century, industrial and population growth in the coal-bearing valleys of the Rhymney, Taff, Dare and Rhondda gave rise to a form of urbanisation characterised as ribbon development. The last deep mine, Tower Colliery at Hirwaun, closed in January 2008. A few small drift mines like Unity Mine (formerly Pentreclwydau South) near Glynneath remain. Towns in the region included Aberdare, Caerphilly, Pontypridd, Maesteg, Merthyr Tydfil and Mountain Ash.

Further west is Swansea Bay and the Gower Peninsula, an Area of Outstanding Natural Beauty. Of all the areas, Gower was the least affected by heavy industry and the ancient landscape was the least impaired. The high ground that runs centrally through the Gower was largely uncultivated common land and its beaches and rocky coastal headlands showed little signs of the tourist trade that played an increasing role on the local economy. The major settlements of the region include Swansea, Neath and Port Talbot.