Wonder if it's the bird droppings that make lichen to grow on the top of the stone? That should explain why it grows so much in some places and nothing in other places.
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Wonder if it's the bird droppings that make lichen to grow on the top of the stone? That should explain why it grows so much in some places and nothing in other places.
Posted using Partiko Android
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I often wondered this too. Maybe we can both have this brain teaser solved ! Perhaps it's angle to the sun as well though ?
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Hm... the whole side of the stone look to have the same angle to the sun still, it only grows on the top.
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I think its from birds nothing too special lol