noun
the scientific study of caves and other underground structures
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Speleology is the scientific study of caves and other underground spaces.
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My friend is really into speleology and loves exploring caves in his free time.
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I never thought I would enjoy speleology, but after my first cave exploration, I was hooked!
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Exploring the depths of human emotions can be compared to the practice of speleology, as both require courage and curiosity.