DVD-en inneholder en amerikansk/engelsk versjon av filmen. Journey to the Beginning of Time (Czech: Cesta do pravěku, literally 'Journey into prehistory') is a 1955 Czechoslovak science fiction adventure film directed by Karel Zeman. The story involves four teenage friends who take a rowboat along a 'river of time' that flows into a mysterious cave and emerges on the other side onto a strange, primeval landscape. The boy actors were Josef Lukáš (Petr, the main narrator), Petr Herrmann (Toník, who also narrates in part), Zdeněk Husták (Jenda), and Vladimír Bejval (Jirka). As they make their way upstream, they realise that they are travelling progressively farther back in time, and face various perils as they do so (but learn much about prehistoric life in the process). The animals depicted in Cesta do pravěku were never shown interacting with animals of other periods and it is assumed that different parts of the river represented distinct time periods.. Produksjonsår: 1955