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Polygonia c-album
find out more... Polygonia c-album Copyright: Peter Harvey

Essex Field Club
Essex Field Club
registered charity
no 1113963
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We are normally open to the public at our centre at Wat Tyler Country Park every Saturday, Sunday and bank holiday between 11am and 4pm. We are also usually open on Wednesdays between 10am and 4pm.

Spring recording Record your Robin Record Common Frog Rana temporaria
Record Alexanders Smyrnium olusatrum Record Tawny Mining Bee Andrena fulva
Record Dark-edged Bee Fly Bombylius major
Record Spring Flower Bee Anthophora plumipes
Record cuckoo bee Melecta albifrons

Geology Site Account


Park Farm Boulder, Havering-atte-Bower, HAVERING-ATTE-BOWER, London Borough of Havering, TQ49099375, General geological site

 
 
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On private farmland one kilometre east of Cabin Hill, just south of the Essex border, is a 145 centimetre (4’6”) long sarsen stone beneath a large oak tree. The stone is close to a patch of boulder clay (till) which was deposited by the Anglian ice sheet some 450,000 years ago. This suggests that the stone is a glacially-transported boulder, brought to this spot by the ice sheet from the chalk hills of north Essex where sarsen stones are relatively abundant. For its size, this may be the most southerly glacial erratic boulder in England. It may also be the only sarsen stone in the whole of Greater London.



The Park Farm sarsen stone. Photo: G. Lucy

 

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Reference: Salter 1914

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