speleology

1. The 10th International Speleology Congress held in budapest, Hungary
   第10届国际洞穴学大会在匈牙利举行
2. The brief history of ancient cave topography study in China-Congratulations on the founding of Committee on Speleology, geological society of China
   中国古代洞穴地形研究简史&祝中国地质学会洞穴研究会成立
3. An Outline of Speleology Research Progress
   洞穴研究进展综述

noun

1. the pastime of exploring caves

   Synonym:    spelaeology

2. the scientific study of caves

   Synonym:    spelaeology