Final answer:
Fields are not an example of a karst cave; whereas, sinkholes and gorges are typical karst features, and valleys, although sometimes part of karst landscapes, are not caves themselves.
Step-by-step explanation:
The question is about identifying which feature is not an example of a karst cave. Karst caves are formed due to the dissolution of soluble rocks, such as limestone, dolomite, and gypsum, which is a process known as solubility equilibrium. This process can create a variety of karst landscapes, including but not limited to, sinkholes, gorges, and underground caverns. Among the options provided:
- Sinkholes are typical of karst environments as they form when the roof of a cave collapses.
- Gorges can also form in karst areas where rivers have cut through the soluble rock.
- Fields, in the context of the question, do not specifically relate to karst features, thus they are not an example of a karst cave.
- Similarly, valleys can be found in karst regions, but are not a karst cave themselves rather they can house a series of caves and karst features.
Answering the student's question, 'fields' are not an example of a karst cave.