在以下频道推出： CuriosityStream、Prime Video、Tubi、Sling TV
第 1 季，第 5 集: A personal account of the tragic battles that unfolded amid the sharp gullies and ravines of the Dolomites, requiring men to perform the nearly impossible: excavate and tunnel through solid granite in freezing weather.
Documentary · 2021年9月7日 · 44 分钟