The Lewes Downs were cleared of woodland centuries ago to create pasture for sheep. The chalky soil is very thin and improverished of nutrients but gives rise to an incredible variety of plant species.

The short vegetation allows the ground to warm up in the sunshine so many insects are able to survive here at the northern most edge of their range.

It is a Site of Special Scientific Interest and contains a National Nature Reserve. The land is managed by English Nature and Sussex Wildlife Trust to maintain its special wildlife and natural features for present and future generations.