Lichen growths creating interesting abstract pattern on a stone gatepost in The Yorkshire Dales National Park. They are great air pollution indicators

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Size: 4016px × 5764px
Photo credit: © Malcolm Walker / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: air, algae, area, centre, circular, country, craven, dales, ecosystems, field, fungus, great, indicators, lichens, limestone, malham, malhamdale, miniature, national, north, park, pollution, study, tarn, walk, yorkshire