Moonshaft

Moonshaft or Mooncave is the name given to a large mysterious object allegedly located somewhere in an unspecified mountain range in Slovakia. Moonshaft was allegedly discovered in 1944 during the Slovak National Uprising by military commander Antonín Horák who later emigrated from Czechoslovakia to the United States via France and changed his name to Tony Horak. In 1965, Horak published an excerpt from his diary in the National Speleological Society News. In 1972, French author Jacques Bergier included Moonshaft in his book ''Le Livre de l'inexplicable'' calling it one of the biggest mysteries ever. Due to the political situation in Czechoslovakia after 1968, the first attempts to find Moonshaft took place as late as in 1980. Some of the theories on the origin of the Moonshaft include geological anomaly, ancient copper mine, entrance to an underground city, extraterrestrial spaceship, etc. The story remains very popular among speleologists, paranormal investigators, and various adventurers who regularly try to explore auspicious locations in Slovakia as well as learn more about Horak and the events from his diary. Provided by Wikipedia