The Lion's Mouth (sign) National Trust sign located at the northwestern corner of the area of Felbrigg Park Great Wood known as the Lion's Mouth. Many of the ancient oaks, beeches, maples and sycamores in Great Wood were planted by William Windham. Known as William I, the son of Thomas Windham (who in the 17th century built Felbrigg Hall) planted the foundation of the 600 acre woodland. Bordered in the west by the picturesque Lion's Mouth, it extends to the B1436 (Felbrigg Road) in the east and the A148 (Holt Road) to the north, and beyond. Great Wood shelters Felbrigg Hall and park from the winds that blow in from the North Sea, two miles distant to the north.