British artist Simon Beck creates the huge patterns on frozen lakes in Les Arcs, France
These snowy 'crop circles' look like they took ages to create.
No chance, then, that the imprints were made by alien lifeforms leaving behind remarkable patterns for us to gaze at.
Instead, they are the work of a lone artist who has spent up to ten hours a day trudging around a French ski resort.
The intricate patterns are huge - some span the equivalent size of six football pitches.