Speleological (adjective)

1. Relating to the study or exploration of caves and their formations.
2. Of or relating to the scientific study of caves, including their formation, history, geology, hydrology, and biology.

Origin:

From french spéléologique, from spéléologie ("speleology"), from ancient greek σπηλαιολογία (spēlaiología, "study of caves"), from σπήλαιον (spēlaion, "cave") + -λογία (-logia, "study of").

Examples:

1. The speleological society was formed to bring together individuals interested in exploring and studying caves.
2. Speleological expeditions are often conducted to gather information about unique cave formations and ecosystems.
3. Speleologists use various techniques, including geophysical surveys and dye tracing, to study underground hydrological systems.
4. The speleological conference was attended by scientists and cavers from around the world to discuss new discoveries and advances in the field.
5. Speleological research has revealed important insights into the geological history of the earth and the evolution of life forms.