Cheddar Complex Cheddar Complex The Cheddar Complex is a 441.3 hectare (1090.5 acre) biological Site of Special Scientific Interest near Cheddar around the Cheddar Gorge and north east to Charterhouse in the Mendip Hills, Somerset, notified in 1952. The very large area includes 4 SSSIs formerly known as: Cheddar Gorge SSSI; August Hole/Longwood Swallet SSSI; GB Cavern Charterhouse SSSI; and Charterhouse on-Mendip SSSI. It is part owned by the National Trust, commercial landowners including the Marquess of Bath's Longleat Estate; and part managed by the Somerset Wildlife Trust. The Cheddar Complex supports a wide range of semi-natural habitats which includes unimproved grassland,
Alyn Valley Woods and Alyn Gorge Caves Alyn Valley Woods and Alyn Gorge Caves Alyn Valley Woods and Alyn Gorge Caves is a Site of Special Scientific Interest on the border of Flintshire and Denbighshire in north Wales. Most of the site is also designated as the Alyn Valley Woods Special Area of Conservation and the southern part includes Loggerheads Country Park. The SSSI has an area of 190.3 hectares while the SAC covers 168.3 hectares. A large part of the site is covered by broadleaved woodland with sessile oak, ash and sycamore among the dominant tree species. Notable plants in the woods include stinking hellebore, green-flowered