Around 1827, Hercule Florence described in his logbook “Viagem Fluvial do Tietê ao Amazonas”, a region of abrupt rock formations nearby São Geronimo Mountain. During a hard trip up and down waterfalls, Hercule took a moment to observe and draw the amazing landscape. Probably, the most magical moment in his journey. The film “THE BLUE NIGHT” reconstructs the stellar, cloud movement and shadows behind the emblematic Chapada Diamantina stones. Influenced by the “tableaux transparent” and the “stereopinture”, the film talks about an imaginary lost night in time and space.