This nature reserve covers more than 345 hectares and consists of ancient woodland, heathlands and grasslands. There is also 5 km (3 mi) of cliffs and coastline. It falls within the High Weald Area of Outstanding Natural Beauty and is also a Site of Special Scientific Interest. Rare and uncommon lichens, liverworts and mosses grow here; and important communities of dormice live in the woodlands. There is plenty for bird watchers, from Dartford warblers and stonechats on the heathland to peregrines, black redstarts and fulmars nesting and breeding on the cliffs. Migratory birds also visit in spring and autumn. There are footpaths, nature trails and picnicking areas.