This former limestone quarry is now rough grassland on Jurassic limestone. The flora is diverse, and more than a hundred flowering plants have been recorded, including wild thyme, dropwort, dyer's greenweed and clustered bellflower. There is a substantial butterfly population.[4]
There is access from a footpath adjacent to a house called Deep Side on Stamford Road.
^"Collyweston Quarries". Wildlife Trust for Bedfordshire, Cambridgeshire and Northamptonshire. Archived from the original on 5 September 2015. Retrieved 2 April 2017.