Giant erratic boulders on a seaweed bed on the Isle of Eigg, Inner Hebrides, Scotland, United Kingdom, Europe

Large erratic boulder on the rocky coastline at Scarista with a view over the sand towards the hills of Taransay, Scarista, Isle of Harris, Outer Hebrides, Scotland, United Kingdom, Europe

Norber erratic boulders, the result of glacial erosion, found above Crummack Dale, near Austwick, North Yorkshire, England, United Kingdom, Europe

Erratic in tidal pool on isle of Taransay, looking towards Toe Head on South Harris, Outer Hebrides, Scotland, United Kingdom, Europe

Twin Erratic boulders high above Nant Ffrancon valley, Snowdonia National Park (Eryri), North Wales, United Kingdom

Erratic boulder at Norber, Yorkshire, England, United Kingdom, Europe

Big Rock, the largest glacial erratic, Okotoks, Alberta, Canada, North America

Big Rock, the largest glacial erratic, Okotoks, Alberta, Canada, North America

Big Rock, the largest glacial erratic, Okotoks, Alberta, Canada, North America

Glacial Erratic Boulder backed by the Glyderau Mountains, Cwm Idwal, Snowdonia National Park, Eryri, North Wales, United Kingdom, Europe

Norber erratics near Austwick, erratic boulders left on limestone pavement by erosion, Yorkshire Dales National Park, Yorkshire, England, United Kingdom, Europe

Erratic in tidal pool on isle of Taransay, looking towards Toe Head on South Harris, Outer Hebrides, Scotland, United Kingdom, Europe

Norber erratics near Austwick, erratic boulders left on limestone pavement by erosion, Yorkshire Dales National Park, Yorkshire, England, United Kingdom, Europe

Norber erratics near Austwick, erratic boulders left on limestone pavement by erosion, Yorkshire Dales National Park, Yorkshire, England, United Kingdom, Europe

Norber erratics near Austwick, erratic boulders left on limestone pavement by erosion, Yorkshire Dales National Park, Yorkshire, England, United Kingdom, Europe

Norber erratics near Austwick, erratic boulders left on limestone pavement by erosion, Yorkshire Dales National Park, Yorkshire, England, United Kingdom, Europe

Glacier lake on Ngozumpa glacier with Cho Oyu (8201), Khumbu Himal, Sagarmatha National Park, Nepal

Moeraki Boulders, split rocks, Koekohe Beach, Otago, South Island, New Zealand, Oceania

Moeraki Boulders, spherical rocks on Koekohe Beach, Otago, South Island, New Zealand, Oceania

Dolmen near Locmariaquer, Brittany, France, Europe

Moeraki Boulders, spherical rocks on Koekohe Beach, Otago, South Island, New Zealand, Oceania

Glacier lake on Ngozumpa glacier with Arakamtse (6423) and Cholatse (6335), Khumbu Himal, Sagarmatha National Park, Nepal

Ngozumpa glacier with Cho Oyu (8201), Khumbu Himal, Sagarmatha National Park, Nepal

Grave slabs leaning against a dry wall made of erratic blocks, in the old village cemetery, old village church from the 15th Century in the back, Hohenkirchen, Mecklenburg-Western Pomerania, Germany, Europe

Valley with Khumbu glacier and Nuptse (7861), Khumbu Himal, Sagarmatha National Park, Nepal