Park Farm DownPark Farm Down or Parkfarm Down is a biological Site of Special Scientific Interest north-west of Lambourn in Berkshire. It is in the North Wessex Downs, which is an Area of Outstanding Natural Beauty.GeographyThe site features an area of scattered sarsen stones which are now extremely rare on the Berkshire Downs.FaunaThe site has the following Fauna:LychensBuellia saxorumCandelariella corallizaRamalina siliquosa