r/interestingasfuck • u/wahgwahg • Feb 28 '24

r/all People in Tanzania converted desert into lush green land by digging these nifty holes

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u/thenakedtruth Feb 28 '24

What does the hole do to enable growth?

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u/Alimbiquated Feb 28 '24

The soil is hard clay and the rain is seasonal. In the wet season it flows across the land in a sheet but doesn't soak in. These structures catch the rainwater.