The Great Underground War (2014)

A five-part series that explores the forgotten story of the incredible engineering feats and secret survival techniques of five legendary battles fought underground during World War I.

In India on Curiosity Stream · CuriosityStream via Prime (add-on)

IMDb unavailable · Rotten Tomatoes unavailable

Source checked 2026-10-25T08:15:35.799Z. Seasons, audio and plans may differ.