snowdrops brought back for the occasion. The oldest tree on the estate is an English yew, which is over 550 years old, predating the current buildings on site. It is said to be the oldest in Lancashire. The tallest is a wellingtonia which towers over the woodland. There are numerous coast redwoods, including a fallen specimen believed to be one of only two in the UK. There are two dawn redwoods, which, because of their size are thought to date the early 20th century when explorers brought specimens from China to Kew Gardens. Horse-chestnuts can be found in the grounds but the most prominent is by the River Douglas. A Lebanon cedar on the tower lawn was cut down in the 1980s was replaced by a new specimen in the arboretum. Lime trees flank the driveway to the front entrance and Maiden's Walk. Three magnolia trees are growing out of the foundations of the east wing. Originally they were planted to grow up the wall. Other trees include atlas cedar, atlantic white cedar, beech, cherry tree, Chinese Swamp Cypress, common yew, Chinese Yew Deodar cedar, hawthorn, Japanese red cedar, Chinese Juniper, holly, hornbeam, Irish yew, oak, Scots pine, silver birch and sycamore which have damaged other trees because of their fast growth and competition for space. A woodland management program removing diseased and weed trees is in operation. In 2011 the 101st yew tree was planted along with a Ginkgo biloba to commemorate the Wedding of Prince William of Wales and Kate Middleton. Archaeological Features Archaeological features have been studied by the action group, English Heritage, Heritage Trust for the North West and students from the University of Central Lancashire: A swimming pool was constructed by estate workmen during the 1930s for Sir Seddon-Brown's children. It was uncovered in 1998 having been derelict for some time but the brick walls and stone steps remain. A conservatory was situated on the west-facing wall projecting from the east wing of the house. It complemented the architecture, with finials and balls. It was replaced in the early 20th century and that was demolished during the 1950s. A pond to the west of yew avenue was drained by the army during World War II. Sycamore trees that grew in the silt were cleared to create a sunken garden planted with native flowers, ferns and snowdrops. To the south of the pond is a fallen