Ground Art

Found Art should have, and may indeed already  have, a subdivision of objet trouvé including only what's found on the ground.  In which case I'm sure much of the content would be manufactured artefacts such as litter or  lost items. So here's a preference expressed for that which has nothing linked to human influence. March is often a good time to look for these informal mostly irregular patterns, after a series of frosts have worked on the leaves and wind has dislodged the fragile twigs.