Mountain range

A mountain range (mountain chain, mountain belt) is a geographic area with many mountains. A 'mountain system' or 'system of mountain ranges' includes geological features that are in the same region as a mountain range.

Mountain ranges usually include highlands or mountain passes and valleys. Individual mountains in the same range do not always have the same geology or petrology. They may be a mix of different orogenic expressions and terrains, for example thrust sheets, uplifted blocks, fold mountains, and volcanic landforms. This results in a variety of rock types.