Cordillera
A group of mountain ranges is called a mountain range system or a mountain chain.
A group of adjacent mountain ranges is called a mountain chain.
Mountain ranges in parallel chains are called "cordilleras."
West Virginaia has 306 mountain ranges and many argue that it should be called the mountain state.
A group of mountain ranges that run side by side is called a cordillera.
Parallel mountain ranges are called "ranges" or "ridges." Examples include the Sierra Nevada and the Rocky Mountains in North America.
range
mountain belt.
The region in California that consists of long mountain ranges and valleys is called the Sierra Nevada mountain range.
Mountain ranges.
Mountain ranges.
Large groups of mountains are called mountain ranges.