Oakley Hill | Berks, Bucks & Oxon Wildlife TrustChiltern gentian is the star of this isolated and beautiful chalk downloand reserve, perched on the Chiltern escarpment.Chiltern gentian is the star of this isolated and beautiful chalk downloand reserve, perched on the Chiltern escarpment. A hidden gem Hidden behind the imposing, but now peaceful, chalkpits at Chinnor, Oakley Hill is made up of old downland, scrub and https://www.bbowt.org.uk/reserves/Oakley-Hill