Cave research, encompassing the study of speleology and biospeleology, is still in its infancy in India. Although there are thousands of caves in India, research expeditions occur in few states. The Siju Cave of state Meghalaya is the first limelighted natural cave from India. Several studies were carried out in this cave in the early 20th century. The Kotumsar Cave of Central India is one of the most explored caves of India, and biologists have classified many types of cavernicoles, i.e. trogloxenes, troglophiles and troglobites, from this cave.