Collyweston Quarries is a biological Site of Special Scientific Interest in Easton on the Hill in

Northamptonshire Northamptonshire (; abbreviated Northants.) is a county in the East Midlands of England. In 2015, it had a population of 723,000. The county is administered by two unitary authorities: North Northamptonshire and West Northamptonshire. It is ...

, south of Stamford. It is managed by the Wildlife Trust for Bedfordshire, Cambridgeshire and Northamptonshire. This former limestone quarry is now rough grassland on

Jurassic The Jurassic ( ) is a Geological period, geologic period and System (stratigraphy), stratigraphic system that spanned from the end of the Triassic Period million years ago (Mya) to the beginning of the Cretaceous Period, approximately Mya. The J ...

limestone. The flora is diverse, and more than a hundred flowering plants have been recorded, including

wild thyme ''Thymus serpyllum'', known by the common names of Breckland thyme, Breckland wild thyme, wild thyme, creeping thyme, or elfin thyme, is a species of flowering plant in the mint family Lamiaceae, native to most of Europe and North Africa. I ...

, dropwort,

dyer's greenweed ''Genista tinctoria'', the dyer's greenweed or dyer's broom, is a species of flowering plant in the family Fabaceae. Its other common names include dyer's whin, waxen woad and waxen wood. The Latin specific epithet ''tinctoria'' means "used as ...

and

clustered bellflower ''Campanula glomerata'', known by the common names clustered bellflower or Dane's blood, is a species of flowering plant in the genus ''Campanula'', belonging to the family Campanulaceae. It is the county flower of Rutland, England. Etymo ...

. There is a substantial butterfly population. There is access from a footpath adjacent to a house called Deep Side on Stamford Road.

References

{{SSSIs Northamptonshire Sites of Special Scientific Interest in Northamptonshire