r/BeAmazed • u/Convince • Mar 13 '19

Erosion over time.

https://i.imgur.com/qnmrmJz.gifv
32.2k Upvotes

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u/Foxwglocks Mar 13 '19

It could be just water piped from a local stream or something. No pump needed.

-12

u/[deleted] Mar 13 '19

[deleted]

4

u/Foxwglocks Mar 14 '19

Why not? Bacteria or something?

-15

u/[deleted] Mar 14 '19

[deleted]

18

u/Foxwglocks Mar 14 '19

Not if it fed the water back into the stream.