21 Stunning Pictures You’ve Never Seen Before

17. A microscopic image of a human tongue

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18. Where the Great Wall of China ends

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19. A tree frog wearing a lizard as a hat

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20. An aerial view of a scrap tire dump

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21. A cross-section of an undersea cable

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Collage sources: 1) imgur 2) imgur 3) imgur

Source: Diply

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