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A curtain of beard lichens (Usnia sp.) covers the trees at Huilo Huilo park

File: D7E2826.jpg

Title: A curtain of beard lichens (Usnia sp.) covers the trees at Huilo Huilo park

A curtain of beard lichens (Usnia sp.) covers the trees at Huilo Huilo park

Credit: Gerhard Hüdepohl / atacamaphoto