SCOTLAND: The Big Picture / Red squirrel (Sciurus vulgaris) sitting on an old giant gnarled Oak tree. Highlands, Scotland, UK, January. Highly Commended in the Habitat Category of the British Wildlife Photography Awards (BWPA) C...

SCOTLAND: The Big Picture / Red Squirrel (Sciurus vulgaris) on gnarled tree stump. Cairngorms National Park, Highlands, Scotland, UK, May.

SCOTLAND: The Big Picture / Red deer stag (Cervus elaphus) in rugged habitat standing next to old gnarled Scots pine tree, Western Highlands, Scotland, UK, December.

Jim Brandenburg / Gnarled tree roots, Mississippi River, Minnesota

Solvin Zankl / English oak tree (Quercus robur) gnarled branch, Kellerwald, Hesse Germany, November.

Olga Kamenskaya / Tree with gnarled roots, 'Brown Bear Coast', Baikalo-Lensky Nature Reserve, Lake Baikal, Siberia, Russia, September 2013.

Jack Dykinga / Bristlecone pine (Pinus aristata var. longaeva) gnarled branches of an old tree, Bryce Canyon National Park, Utah, USA.

Wild Wonders of Europe / Widstrand / Oak tree (Quercus robur) ancient gnarled tree trunk, Letea forest, Strictly protected nature reserve, Danube delta rewilding area, Romania

Wild Wonders of Europe / Widstrand / Oak tree (Quercus robur) ancient gnarled tree trunk, Letea forest, Strictly protected nature reserve, Danube delta rewilding area, Romania

Wild Wonders of Europe / Widstrand / Hornbeam (Carpinus betulus) gnarled trunk and bark, North Velebit National Park, Velebit Nature Park, Rewilding Europe area, Velebit mountains, Croatia

Jack Dykinga / Gnarled ancient Bristlecone pine (Pinus longaeva) lit by the full moon and star light, White Mountains Patriarch Grove, Inyo National Forest, California, USA

Axel Gomille / Sloth Bear (Melursus ursinus) climbing a gnarled tree. Karnataka, India, March.