What can visitors learn about while on tour regarding cave formations?

Visitors can learn about the processes that lead to the creation and evolution of cave formations while on tour. This topic provides essential insights into how various geological and chemical processes contribute to the development of stalactites, stalagmites, and other unique formations within caves. Understanding these processes includes learning about mineral deposits, water erosion, and the role of time in shaping the cave's features. This knowledge enriches the visitor's appreciation of the natural history and complexity of subterranean environments, making it a fundamental aspect of cave tours.

The other options may provide interesting perspectives but do not emphasize the geological and chemical processes critical to the formation of cave structures.