A 20 ton mine under the German front line positions at Hawthorn Redoubt is fired 10 minutes before the assault at Beaumont Hamel on the first day of the Battle of the Somme, July 1, 1916. The mine left a crater 40 m across 18 m deep.

A 20 ton mine under the German front line positions at Hawthorn Redoubt is fired 10 minutes before the assault at Beaumont Hamel on the first day of the Battle of the Somme, July 1, 1916. The mine left a crater 40 m across 18 m deep.