Nature's Graffiti

Challenge #176 in the Life in the Natural World series. Hosted by RuthC.
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Before humans left their marks on walls and buildings, nature was already demonstrating graffiti in interesting places. Show us some examples of this. It may be carvings by beetles under tree bark, snail trails, leaves with wandering paths beneath their surfaces caused by tiny insects, tidal marks in the beach sand... Please, no graffiti or markings made by humans or domestic pets, and minimal evidence of man or man-made structures. Macro and close-ups welcome. Size of entry: 1,600 pixels on the longer side.
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57 entries
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Cactus Patterns
under the "natural bridge"
Sand's Natural Design at Beach
broome WA
Rock Art
iran2
Nature's Graffiti in the water
A meeting of the ways
Nature's lichen emoticon
Biri Rock Formations . Northern Samar Philippines
Siq
4 / 5
Sample entries
These entries were provided by the challenge host(s) as samples and cannot be voted on.
Grafifiti in a Tall Tree
Scribbles in a Leaf
1,600px MAXIMUM
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