The authors of the essays "How Secrets Are Revealed" are employees of the Complex Karst Expedition of the Academy of Sciences of the Ukrainian SSR. Their book tells about the work of archaeologists who discovered sites, settlements, cave shrines of ancient people, about the difficult and dangerous work of hydrogeologists and other cave explorers who swam through underground lakes and rivers. The adventures of faithful assistants to scientists - athletes - also found a place in it. The book is not devoid of humor and polemical enthusiasm directed against the imaginary "secrets" of the caves of Crimea. At the same time, it can serve as a guide for local historians, and readers who have not yet visited the Red Caves will be able to use it as a guide.