File:Cassop Vale National Nature Reserve.jpg

DescriptionCassop Vale National Nature Reserve.jpg Cassop Vale National Nature Reserve, Cassop, County Durham Date 17 April 2006 Source From geograph

DescriptionCassop Vale - geograph.org.uk - 892549.jpg English: Cassop Vale Freshly mown grass in this National Nature Reserve. Date 21 July 2008 Source

DescriptionCassop Vale - geograph.org.uk - 892572.jpg English: Cassop Vale Cassop Vale has been designated a National Nature Reserve because of its bedrock

DescriptionLake, Cassop Vale - geograph.org.uk - 892570.jpg English: Lake, Cassop Vale Cassop Vale has been designated a National Nature Reserve because of

- 892553.jpg English: Former Limestone Quarry Magnesian limestone was the reason for the quarry and it is now the reason why the Cassop Vale has been