Qanat (en.wikipedia.org)
recommended by 1 user | 2016 | 186 points by baghali | history | original thread |
One user recommended this thread. What they said:
dyukqu Jun 24, 2018 | on: Yakhchal: Ancient Refrigerators (2009) | context

https://news.ycombinator.com/item?id=11719441 - Here is a good HN read/thread from two years back about Qanats. Yakhchals was mentioned there.

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