Meaning of the word "rolling hills" in English

What does "rolling hills" mean in English? Explore the meaning, pronunciation, and specific usage of this word with Lingoland.

rolling hills

US /ˈroʊlɪŋ hɪlz/
UK /ˈrəʊlɪŋ hɪlz/

Phrase

an area of land with many gentle, rounded hills

Example:
The countryside was characterized by beautiful rolling hills.
We drove through miles of green rolling hills.