Cairns or "Mariolas" in portuguese, are piles of stones used to mark the paths of shepherds or pedestrian paths in Serra da Estrela (Portugal)

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Size: 5221px × 3481px
Photo credit: © Tânia Araújo / Alamy / Afripics
License: Royalty Free
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Keywords: cairns, da, estrela, green, landscape, marks, mountain, natural, nature, orientation, outdoor, park, paths, piles, serra, shepherds, stone, stones, tradition, trail, trees