@rixx @stufromoz

Thanks, that is indeedy cool.

We visited this antique water system in China, also cool. They grew grapes and watermelon, and water ran past every home - in a desert! At night people dragged their beds over the small canals to sleep more comfortably.

https://govt.chinadaily.com.cn/s/202303/27/WS64225ace498ea274927b3422/china-focus-ancient-karez-wells-still-nourishing-xinjiang-people.html