Kielder Forest is one of six forests and woodlands featured on a new set of stamps. The stamps will go on sale on August 13 to coincide with the 100th anniversary of the Forestry Commission.

The others are Glen Affric in Invernesshire, Sherwood Forest in Nottinghamshire, Glenariff Forest in County Antrim, Westonbirt in Gloucestershire and Coed y Brenin in Gwynedd.

Kielder Forest in Northumberland is the largest human-made forest in Britain, stretching 250 square miles. The Forestry Commission harvests around 500,000 cubic metres of timber here each year. The felled areas are replanted. Philip Parker of Royal Mail said: “These stamps celebrate the beauty and tranquillity of our public woodlands and the inspiring range of environments which receive hundreds of millions of visits each year.”