Lichen growing on a rock in Shenandoah National Park, Virginia, USA

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Photo credit: © Bilderbuch / Alamy / Afripics
License: Royalty Free
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Keywords: .., ..., close-, designpics, grow, growing, growth, lichen, lichens, national, nationalpark, nationalparks, natural, nature, outdoors, park, rock, shenandoah, shenandoahnationalpark, symbiosis, symbiotic, unitedstates, unitedstatesofamerica, usa, virginia