On the eve of Man's conquest of the Moon, in the summer of 1969, 34-year-old Milutin Veljković set off to spend the following 15 months in a two-kilometer long cave in the Southeast Serbia, in a company of a dozen of hens and ducks, and a puppy. Veljković wasn’t just interested in beating the record in cave dwelling - he aimed to penetrate into the universe of depth.
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