[1][2] He authored numerous books and publications and from 1998 until 2002 he was chief editor of the Czech paranormal magazine Fantastická fakta ("Fantastic Facts").

[4] For his expeditions, he purchased a German amphibious jeep (the Volkswagen 166 Schwimmwagen) dating from World War II and refitted it to suit his work.

At 27, he made special efforts to get permission from the government of Czechoslovakia, at the time behind the Iron Curtain, to go Scotland to investigate the Loch Ness Monster.

[4] Sale of his popular book the Cesty za příšerami a dobrodružstvím ("Quests for Monsters and Adventure"), in addition to his lectures and columns in newspapers and journals, helped him to raise funds.

[2] His team began an eight-week search for a large, lethal dark-red worm-like creature believed to inhabit the Gobi Desert, the Mongolian death worm.

He described the animal from second-hand reports as a "sausage-like worm over half a metre (20 inches) long, and thick as a man's arm, resembling the intestine of cattle.

Its colour is dark red, like blood or salami..."[5] He surmised that the worm extracted its venom from the goyo plant and was capable of delivering lethal electric shocks to its victims.

[2] He collected enough photographs, footage and data to make a documentary on his trips to Mongolia, broadcast on Czech television in 1993 as The Sand Monster Mystery.