This is almost a pastime in the Pacific Northwest. You can stack rocks for hours before you actually get a stack this size.
Rock tower of stacking rocks hi-res stock photography and images - Alamy
Stone stacks covering North Wales beach dubbed 'ugly graffiti' - but others love them - North Wales Live
Beaches 'spoiled': Should rock stacking be banned?
362 Stacking Stones On Beach Stock Photos, High-Res Pictures, and Images - Getty Images
Sharon's Souvenirs: The story of stacked rocks continues
Sharon's Souvenirs: The story of stacked rocks continues
Beaches 'spoiled': Should rock stacking be banned?
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Beaches 'spoiled': Should rock stacking be banned?