Fold mountains are formed when tectonic plates collide, causing the Earth's crust to bend and fold. This process creates high peaks and deep valleys, resulting in rugged landscapes. Examples of fold mountains include the Himalayas, which were formed by the collision of the Indian and Eurasian plates. These mountains are often characterized by their steep slopes and complex geological structures. They can be found on every continent and are typically associated with significant geological activity, including earthquakes. Fold mountains also play a crucial role in influencing local climates and ecosystems.