Norway, Oslo, Holmenkollen. Detail study of tree bark with frost, found in the Holmenkollen area near to the Tryvann Ski-field.

Norway, Oslo, Holmenkollen. Detail study of tree bark with frost, found in the Holmenkollen area near to the Tryvann Ski-field.

Norway, Oslo, Holmenkollen. Snow covered trees found in the Holmenkollen area near to the Tryvann Ski-field.

Norway, Oslo, Holmenkollen. Snow covered trees found in the Holmenkollen area near to the Tryvann Ski-field.

Norway, Oslo, Holmenkollen. Snow covered trees found in the Holmenkollen area near to the Tryvann Ski-field.

Norway, Oslo, Holmenkollen. A female cross country skier and her dog, skiing in the Tryvann Skifield

Norway, Oslo, Holmenkollen. Snow covered forest and ice covered lake at dusk, in the Tryvann Skifield in the Holmenkollen area.

Norway, Oslo, Holmenkollen. Snow covered forest and ice covered lake at dusk, in the Tryvann Skifield in the Holmenkollen area.

Norway, Oslo, Holmenkollen. A skier enjoys a winter snowfall on the slopes of the Tryvann Skifield, in the Holmenkollen area.

Norway, Oslo, Holmenkollen. Skiers and snow boarders queue for the lifts of the Tryvann Skifield, in the Holmenkollen area.

Norway, Oslo, Holmenkollen. Skiers and snow boarders queue for the lifts of the Tryvann Skifield, in the Holmenkollen area.

Norway, Oslo, Holmenkollen. A family enjoy the lower slopes of the Tryvann Skifield, in the Holmenkollen area.

Norway, Oslo, Holmenkollen. A snow covered route direction sign found in the Holmenkollen area near to the Tryvann Ski-field.

Norway, Oslo, Holmenkollen. A snow boarder walks up to the upper slopes of the Tryvann Skifield, in the Holmenkollen area.

Norway, Oslo, Holmenkollen. A snow covered route direction sign found in the Holmenkollen area near to the Tryvann Ski-field.

Norway, Oslo, Frognerseteren Cross country skiers heading from the Frognerseteren station to the Tryvann Skifield

Norway, Oslo, Frognerseteren Skiers and snow boarders cross the metro train line at the Frognerseteren station near the Tryvann Skifield

Norway, Oslo, Frognerseteren Skiers and snow boarders wait to board a metro at the Frognerseteren station near Tryvann Skifield

Norway, Oslo, Oslo City. A female snow boarder hikes through a snowfall near Bogstad and the Tryvann Ski field.

Norway, Oslo, Oslo City. A winter scene of forest and snow after a heavy snowfall nr Bogstad camping and the Tryvann Ski field

Norway, Oslo, Oslo City. A winter scene of forest and snow after a heavy snowfall nr Bogstad camping and the Tryvann Ski field

Norway, Oslo, Oslo City. A girl hiker ploughs through a heavy snowfall towards woodland near the Tryvann Ski field.

Norway, Oslo, Oslo City. A girl hiker ploughs through a heavy snowfall towards woodland near the Tryvann Ski field.

Norway, Oslo, Oslo City. A girl hiker ploughs through a heavy snowfall towards woodland near the Tryvann Ski field.

Norway, Oslo, Oslo City. A heavy snowfall transforms the woodland and hills near the Tryvann Ski field.

Norway, Oslo, Oslo City. A car driving along a road after a heavy snowfall near the Tryvann Ski field.

Norway, Oslo, Oslo City. A heavy snowfall transforms the woodland and hills near the Tryvann Ski field.

Norway, Oslo, Oslo City. A heavy snowfall transforms the woodland and hills near the Tryvann Ski field.

Norway, Oslo, Oslo City. A van abandoned after a heavy snowfall near the Tryvann Ski field in the Oslo forest.

Norway, Oslo, Oslo City. A van abandoned after a heavy snowfall near the Tryvann Ski field in the Oslo forest.

Norway, Oslo, Oslo City. Car driving down a country road after a heavy snowfall near the Tryvann Ski field in the Oslo forest.

Norway, Oslo, Oslo City. Snow plough / tractor driving down a country road after a heavy snowfall near the Tryvann Ski field in the Oslo forest.

Norway, Oslo, Oslo City. Snow plough / tractor driving down a country road after a heavy snowfall near the Tryvann Ski field in the Oslo forest.

Norway, Oslo, Oslo City. Snow plough / tractor driving down a country road after a heavy snowfall near the Tryvann Ski field in the Oslo forest.

Norway, Oslo, Oslo City. Snow covered post box after a heavy snowfall near the Tryvann Ski field in Oslo Forest.

Norway, Oslo, Oslo City. Snow covered wooden house after a heavy snowfall near the Tryvann Ski field in Oslo Forest.

Norway, Oslo, Oslo City. Car driving down a country road after a heavy snowfall near the Tryvann Ski field in the Oslo forest.

Norway, Oslo, Oslo City. Van driving down a country road after a heavy snowfall near the Tryvann Ski field in the Oslo forest.

Norway, Oslo, Oslo City. Wooden house aside a country road after a heavy snowfall near the Tryvann Ski field in the Oslo forest

Norway, Oslo, Oslo City. Car driving down a country road after a heavy snowfall near the Tryvann Ski field in the Oslo forest.

Norway, Oslo, Oslo City. Young tree aside a country road after a heavy snowfall near the Tryvann Ski field in the Oslo forest

Norway, Oslo, Oslo City. Snow covered wooden house after a heavy snowfall near the Tryvann Ski field in Oslo Forest.

Norway, Oslo, Oslo City. Snow covered public footpath sign after a heavy snowfall near the Tryvann Ski field in Oslo Forest.

Norway, Oslo, Oslo City. Snow covered public footpath sign after a heavy snowfall near the Tryvann Ski field in Oslo Forest.

Norway, Oslo, Oslo City. Snow covered post box after a heavy snowfall near the Tryvann Ski field in Oslo Forest.

Norway, Oslo, Oslo City. Snow covered wooden house after a heavy snowfall near the Tryvann Ski field in Oslo Forest.

Norway, Oslo, Oslo City. Wooden buildings and ski tow bars at Wyller in the Tryvann Ski field, after a snowfall in Oslo Forest.

Norway, Oslo, Oslo City. Wooden buildings and ski tow bars at Wyller in the Tryvann Ski field, after a snowfall in Oslo Forest.

Norway, Oslo, Oslo City. Cross country skiers ski through snow covered woodland in Oslo Forest near Bogstad Camping.

Norway, Oslo, Oslo City. Cross country skiers ski through snow covered woodland in Oslo Forest near Bogstad Camping.