Blaenrhondda Road Cutting is a

Site of Special Scientific Interest A Site of Special Scientific Interest (SSSI) in Great Britain or an Area of Special Scientific Interest (ASSI) in the Isle of Man and Northern Ireland is a conservation designation denoting a protected area in the United Kingdom and Isle of ...

in Glamorgan, south

Wales Wales ( cy, Cymru ) is a Countries of the United Kingdom, country that is part of the United Kingdom. It is bordered by England to the Wales–England border, east, the Irish Sea to the north and west, the Celtic Sea to the south west and the ...

. Located along the

A4061 road The A4061 is the main road linking Bridgend with Hirwaun via the Ogmore and Rhondda Valleys in South Wales. It is a mix of streets connecting former mining communities, and mountain passes built as relief work for unemployed miners. The road ...

above the village of

Blaenrhondda Blaenrhondda is a village in the county borough of Rhondda Cynon Taf, Wales, lying at the head the Rhondda Fawr valley. Blaenrhondda is a village and is part of the community of Treherbert. History The earliest evidence of people inhabiting the ...

Rhondda Rhondda , or the Rhondda Valley ( cy, Cwm Rhondda ), is a former coalmining area in South Wales, historically in the county of Glamorgan. It takes its name from the River Rhondda, and embraces two valleys – the larger Rhondda Fawr valley ('' ...

, the Blaenrhondda Road Cutting is of special interest for its rock exposures showing sediments that formed on the flood plain of a river delta during the Carboniferous period, approximately 310 million years ago.

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See also