No backdrop availableNo posterNa ptačích horách1949DocumentaryJanuary 1, 1949 · CzechoslovakiaSave to watchlistMark as seenShareDetailsStatusReleasedRelease dateJanuary 1, 1949Original languageCzechSpoken languagesCzechCountriesCzechoslovakiaProductionStudio populárně vědeckých a naučných filmů PrahaBudgetNot recordedRevenueNot recorded