We don't have such structures in the UK, but we know what they are. I would call it **terracing** to distinguish it from the more usual meanings of 'terrace' here as a [stepped standing area](https://www.stadiumguide.com/wp-content/uploads/standingplaceskoln.jpg), a [row of joined houses](http://www.walkingbook.co.uk/liverpool/anfield/pix/fig-27.jpg) or a [domestic outdoor area](https://www.mylandscapes.co.uk/blog/roof-terrace-lifestyle/roof-terrace-lifestyle.jpg).

[Lexico](https://www.lexico.com/definition/terracing) has

> **terracing**  
> <sub>NOUN</sub>  
>  
> Terraced ground.  
>  
> *The Banaue creations, covering thousands of hectares, are the world's finest example of rice terracing.*