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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.

The Great Underground War

Monte Paterno

Exploring trenches and tunnels and interviewing descendants of the Austrians and Italians who fought under and above the treacherous terrain of the Dolomite mountains.

Col di Lana

For three years, the Germans and French blow each other up with massive explosions, using a maze of underground galleries and tunnels. This story is told through the preserved diaries of Herman Hoppe, a German engineer who built many of the tunnels.

Vauquois, Hill of Death

The story of how a unique British tunneling technique, developed for the mud of Flanders, wins the strategic ground during the gruesome trench warfare of the Ypres Salient.

The Mines of Ypres

An exploration of newly discovered fortresses, dugouts, and bunkers tells the story of the innovative German engineering that made defenses resistant to massive bombardments.

The Secret of the Somme

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S1 E1 | The Secret of the Somme

E5 | Monte Paterno

E4 | Col di Lana

E3 | Vauquois, Hill of Death

E2 | The Mines of Ypres

E1 | The Secret of the Somme