In addition to dissolution, passages in caves can also be formed by other processes, such as:
* Abrasion: This occurs when water carries sediment and debris through a cave, which can scour the walls and enlarge the passages.
* Collapse: This occurs when the roof of a cave collapses, creating a new passage.
* Fracturing: This occurs when the rock in a cave fractures, creating new pathways for water to flow.
The type of passage that is formed in a cave depends on a number of factors, including the type of rock, the amount of water, and the rate at which the water is flowing.