A 'mountain range'
himallayas
A connected group of mountains is called a range.
hills
A group of mountains are called mountain ranges.
A group of mountains are called mountain ranges.
A connected group of mountains is called a range.
himallayas
A connected group of mountains is called a range.
mountain range
hills
The group is the green mountains.
A group of mountains are called mountain ranges.
A group of mountains are called mountain ranges.
what you call a group of connected rooms is a donut
cascade mountains
A chain of mountains. Or a mountain range.
The Alps.