Terraced paddy fields have been used for centuries in countries such as Sri Lanka (where I'm from), Bangladesh, Vietnam and Indonesia. https://en.wikipedia.org/

Terraced paddy fields have been used for centuries in countries such as Sri Lanka (where I'm from), Bangladesh, Vietnam and Indonesia. https://en.wikipedia.org/wiki/Paddy_field#/media/File:Pana_Banaue_Rice_Terraces_(Cropped).jpg https://en.wikipedia.org/wiki/Paddy_field#/media/File:Pana_B...