Foot hills.
black hills of South Dakota
Mount Rushmore is a national monument in the Black Hills mountain range of southwest South Dakota.
žThe land is mainly flat and low-lying in Manaus. There are a few hills and low mountain range.
Lincoln, Nebraska is in a fairly flat area. There are some low hills, but no mountains anywhere near there.
plateau
A low lying land between hills or mountains is called a valley
plateau
Low hills at the base of mountains are known as foothills.
A low point in a mountain range is called a pass or a saddle. It is a gap between two high points that allows for easier travel across the mountain range.
its called a valley
a range of mountains is called mountain range
A valley or a plain.