Constantinos Petrinos / Sign at the entrance of Kessariani Aesthetic Forest, Mount Hymettus, Greece, March 2015.

Constantinos Petrinos / Landscape from Mount Hymettus, Kessariani Aesthetic Forest, East-Central Attica, Greece, March 2015.

Juan Carlos Munoz / Autumnal forest in Kranjska Gora, Jesenice, Julian Alps, Slovenia, October 2014.

Juan Carlos Munoz / View of a river flowing through woodland, Valles Pasiegos, Cantabria, Spain, May 2015.

Juan Carlos Munoz / View of a river flowing through woodland, Valles Pasiegos, Cantabria, Spain, May 2015.

Juan Manuel Borrero / Long exposure of Bonaigua River, Bonaigua Valley, Pyrenees Mountain, Lleida, Catalonia, Spain, October 2013.

Chris Mattison / Wooden footbridge over Burbage Brook, with the ancient woodland of Padley Wood behind. Derbyshire, England, UK, January.

Martin Gabriel / Deciduous forest along Danube River, Weltenburger Enge Nature Reserve, near Danube Canyon, Kelheim County, Bavaria, Germany, August.

Fergus Gill / A misty morning over a mixed woodland in autumn. Kinnoull Hill Woodland Park, Perthshire, Scotland, October 2012.