Foot hills.
a range of mountains is called mountain range
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
none, there are some hills up in north miss. but that is just the beginnings of the ozark range which is located in Arkansas and Missouri
The low point of a mountain range is called a pass. In contrast, the high point is called a peak.
A valley or a plain.
In geography, a col is a low point or saddle between two mountains or hills, often allowing for easier passage through a mountain range.
plateaus