Bozkov is a municipality and village in Semily District, located in the Liberec Region of the Czech Republic.

In 1923, Bozkov was promoted to a market town but lost the title after World War II.

Their lower parts are permanently flooded and form the largest underground lake in Bohemia.

A 350 metres (1,150 ft) long route is open to the public and annually visited by about 70,000 visitors.

It was built in 1697 and contains a rare Gothic sculpture of the Madonna, locally called "Queen of the Mountains."