Hertfordshire's geology and landscape has many special features. Here is a selection of ten
star sites. For more information read 'Hertfordshire
Geology and Landscape'
Barkway
Erratic of Chalk Rock with till beneath; good public access
at TL381366; site owned by Herts & Middlesex Wildlife Trust.
Castle Hill, Berkhamsted
Boulders showing Hertfordshire Pudding Stone and sarsen; beside public road at SP 993085.
Harefield Pit
Chalk/ Upnor Formation junction with borings by Glyphicnus harefieldensis; small overgrown section on edge of large infilled chalk quarry at TQ 049898.
Hitch Wood Chalk Pit
Famous Chalk Rock fauna; good public access at TL 197239; site owned by Herts & Middlesex Wildlife Trust.
Little Heath Pit
Plio-Pleistocene marine gravels; beside public road at TL 017082; National Trust land.
Radlett
Hertfordshire Puddingstone in situ in Reading Beds; at TQ 175994; very limited access through new owners of Wood Hall Stud Estate.
Redbournbury
Late Devensian naleds (surface periglacial ice features) on floor of Ver valley at TL 123094; access only through landowner, but good view from the lay-by beside A 5183.
Reed
Chalk disturbed by glacial erosion; at TL 359370, with public access only by permission of landowners through Herts & Middlesex Wildlife Trust.
Royston
Erratic block of Millstone Grit, from which the town takes its name; TL 356407; beside public road
Water End
Swallow holes where streams flow into Chalk bedrock; TL 2304, good public access from several footpaths.
A Geological Conservation Strategy for Hertfordshire
Other special sites and features of Hertfordshire's geodiversity are listed in 'A Geological Conservation Strategy for Hertfordshire' (Section 6, page 28). Click
here to download a copy in PDF format.
