Folding occurs when layers of rock are subjected to compressional forces, causing them to bend and warp. This can create a variety of features, including:

* Anticlines: Upward folds that resemble an arch.

* Synclines: Downward folds that resemble a trough.

* Monoclines: A step-like fold where one side is tilted more than the other.

Folding is a common geological process that plays a significant role in the formation of mountains and other landforms.