It is in the Chilterns Area of Outstanding Natural Beauty.

[1][2] This is a steeply sloping hill, which is a fine example of grazed chalk grassland in the southern Buckinghamshire Chilterns.

There is a wide variety of plants, some of which provide food for the larvae of important butterflies on the site.

Two butterflies are rare, the silver spotted skipper and the Adonis blue.

[1] There are footpaths across the hill from Turville, but the windmill is private property.