Fold mountains are mountain ranges formed by the collision of two continental tectonic plates at a convergent boundary, which causes the plates to squeeze upwards and fold the older and thicker sedimentary rock layers that were deposited in a geosyncline between the plates over time. Examples of fold mountains include the Himalayas between the Indian and Eurasian plates and the Alps between the African and Eurasian plates.

2. Collision zones

4. Formation