The book offered to your attention is dedicated to Cap-Kutan - one of the most famous caves, one of the ten most beautiful in the world. It was written by a caver who passed underground over a thousand kilometers and published about forty scientific papers on caves. In this work, perhaps for the first time in Russian literature, an attempt was made in an artistic manner to talk about the study of caves on the example of Cap-Kutan and on the example of one of the teams of cavers. The book will be interesting for those who were fond of and are fond of caving, and those who simply love travel literature, and those who are still trying to find a business to their liking.