27 ms·
The underground canals sound like qanats, an ancient irrigation technology that originated in Persia and then spread to China and elsewhere: https://en.wikiped
by neartheplain 6y ago
The underground canals sound like qanats, an ancient irrigation technology that originated in Persia and then spread to China and elsewhere:
https://en.wikipedia.org/wiki/Qanat https://en.wikipedia.org/wiki/Qanat
- vram22 6y agoBeat me to saying the same thing, by an hour:) I've always thought qanats were a cool idea.
- jandrese 6y agoThe also sound like the Puquios used in South America.
- hinkley 6y agoI always thought digging a qanat must have been miserable work, but the fact is that the human body’s peak endurance comes at a temperature that is pretty close to ground temperature. Runners and cyclists and gardeners know that a nice 55° day you can just go forever without stopping because your body isn’t wasting any energy on perspiration. And in fact if you do stop for long you just get cold.
- Clewza313 6y agoTemperatures in the Taklamakan can reach 50°, but that's Celsius, not Fahrenheit.