* Erosion is the process of moving weathered material from one place to another. While erosion plays a role in shaping caves, it's not the primary force behind their formation.

* Weathering is the process of breaking down rocks and minerals in place.

How chemical weathering forms caves:

1. Carbonation: Rainwater absorbs carbon dioxide from the atmosphere, forming a weak carbonic acid. This acid reacts with the limestone rock, dissolving it.

2. Dissolution: The dissolved limestone is carried away by groundwater, creating larger cavities and eventually caves.

Other factors:

* Fractures and joints: Pre-existing cracks in the rock allow water to penetrate and accelerate the weathering process.

* Groundwater movement: The flow of water through the rock can create channels and enlarge existing cavities.

* Biological activity: The actions of organisms like bacteria and fungi can contribute to the weathering process.

In summary: While erosion plays a role in shaping caves, chemical weathering is the primary force behind their formation.