無人地帯
No man's land was about wide from the Ancre northwards and narrowed to about beyond the redoubt on Hawthorn Ridge. The ground was flat and unobstructed, except for a sunken road from the Auchonvillers–Beaumont-Hamel road and a low bank near the German front trench. The German front had several shallow salients, flanks, a bastion at the west end of Y Ravine and cover in the valleys to the east. Beaumont-Hamel commanded the valley, which the VIII Corps divisions were to cross and had been fortified. Beaucourt Ridge further back, gave a commanding view to German artillery observers, who could see the gun flashes of British field artillery, despite the guns being dug in. British observers could not see beyond the German support trenches and the convex slope on the British side of no man's land, made it difficult for heavy artillery to hit the front position, parts of which was untouched by the preliminary bombardment.