MarcelinoSanzdeSautuolaydelaPedrueca,in1868,accidentallydiscoveredPaleolithicpaintingswiththehelpofahunternamedModestoCubillasinsideAltamira'scaves,locatedinCantabria,northtoSpain.Tryingtoexposetheirdiscoverytotheacademicworldforthattheystudythepaintings,Sautuolacrashedagainsttheskepticismanddiscreditofallexperts,whoclaimedthatthecaveswerefalseandthepaintingsmadefortheownSautuola,inaefforttogetrich.Lookingforthetruth,Sautuolawastherestofhislifefightingtoprovethatthosepaintingswerereal,tryingtorestorehisinnocencefromtheaccusationsoffalsehoodlaunchedagainsthim在视听表达上，导演有意弱化戏剧元素。数字修复让历史影像焕发活力，全彩上色增强画面细节，画面呈现拓展表现空间。但技术使用十分克制，整体色调保持历史本色。整体表现注重精神价值。色彩选择体现历史责任感，声音设计追求简约风格。