Abstrakt
What is an underground? It is possible to embed this particular way of life into any definition? After all, even underground did not have the need to define itself at the beginning. The presented text represenets a brief reflection of the development of underground in Czechoslovakia; attention is paid to the impulses from West, which had a significant influence on the underground.
For example, the "Hairies" (Vlasatci) Action, which took place in 1966, and the State Security activity in Rudolfov in 1974. The event in Rudolfov was an imaginary landmark and led to the writing of a manifesto that came into the history as the "Report of the Third Czech Musical Revival."