Olga Kamenskaya / Cracks in the ice of Lake Baikal, Siberia, Russia, March.

Graham Eaton / The Norber Erratics. Blocks of older Silurian sandstone, perched on top of younger Carboniferous limestone, that were left by retreating ice at the end of the last Ice Age, Clapham, Yorkshire, winter

Graham Eaton / Limestone pavement above Malham Cove, Yorkshire

Sven Zacek / Frozen leaf in lake ice. Southern Estonia, April.

Joe Cornish / 2020VISION / Pool and Stac Pollaidh, Coigach / Assynt SWT, Sutherland, Highlands, Scotland, UK, June 2011. Did you know? The peak of Stac Polliadh is very severely weathered and it is thought that during the last...

Ross Hoddinott / 2020VISION / European Beech tree {Fagus sylvatica} Yellow leaves in autumn, Sence Valley Forest Park, Leicestershire, UK. November. 2020VISION Book Plate. Did you know? Although thought to have been introduced by...

Graham Eaton / View towards Cribyn from Pen y Fan in the Brecon Beacons National Park, Wales, September. The outcrops of Devonian age, Old Red Sandstone forms escarpments carved by glaciers during the last ice age.

Graham Eaton / View towards Cribyn from Pen y Fan in the Brecon Beacons National Park, Wales, September. The outcrops of Devonian age, Old Red Sandstone forms escarpments carved by glaciers during the last ice age.

Graham Eaton / A glacial erratic of Silurian age sandstone, perched upon younger Carboniferous age limestones. The limestone forms a limestone pavement with the hill , Whernside, Yorkshire, England, UK.

Graham Eaton / Glacial erratic of Silurian age sandstone, perched upon youger Carboniferous age limestones. The limestones form a limestone pavement with the hill Ingleborough in the background. Whernside, Yorkshire...

Graham Eaton / Roche moutonnee or Sheep's back at the head, Nant Ffrancon Valley, Snowdonia, Wales, UK, November. The rock is carved by ice moving down the valley leaving a relatively smooth back edge and top, w...

Will Watson / Erratic boulder deposited beside Llansgorse Lake during the last Ice-Age, an Intraformational conglomerate from the Old Red Sandstone Succession, Devonian Period, and drystone wall, Brecon Beacons Nat...