 On exiting from the park it goes underground to join the Silk Stream near Silkstream Park.The section of the brook between Lyndhurst Park and Watling Park is part of the "Silk Stream and Burnt Oak Brook" Site of Borough Importance for Nature Conservation, Grade II.Downstream of Lyndhurst Park, it passes through a narrow belt of mown grass which is left wild close to the brook, with scattered trees and common wild flowers on the banks.