A gateway made its sudden appearance in the night. We scattered among flat buildings, whose walls here and there showed black holes, like ovens, while the approaches were obstructed with plaster rubbish and nail-studded beams. In places the recent collapse of stones, cement and plaster had laid on the bricks a new and vivid whiteness that was visible in the dark. "It's the glass works," said a soldier to me. We halted a moment in a passage whose walls and windows were broken, where we could not make a step or sit down without breaking glass. We left the works by sticky footpaths, full of rubbish at first, and then of mud. Across marshy flats, chilly and sinister, obscurely lighted by the night, we came to the edge of an immense and pallid crater. The depths of this abyss were populated with glimmers and murmurs; and all around a soaked and ink-black expanse of country glistened to infinity. "It's the quarry," they informed me. Our endless and bottomless march continued. Sliding and slipping we descended, burying ourselves in these profundities and gropingly encountering the hurly-burly of a convoy of carts and the advance guard of the regiment we were relieving. We passed heaped-up hutments at the foot of the circular chalky cliff that we could see dimly drawn among the black circles of space. The sound of shots drew near and multiplied on all sides; the vibration of artillery fire outspread under our feet and over our heads. I found myself suddenly in front of a narrow and muddy ravine into which the others were plunging one by one. "It's the trench," whispered the man who was following me; "you can see its beginning, but you never see its blinking end. Anyway, on you go!" We followed the trench along for three hours. For three hours we continued to immerse ourselves in distance and solitude, to immure ourselves in night, scraping its walls with our loads, and sometimes violently pulled up, where the defile shrunk into strangulation by the sudden wedging of our pouches. It seemed as if the earth tried continually to clasp and choke us, that sometimes it roughly struck us. Above the unknown plains in which we were hiding, space was shot-riddled. A few star-shells were softly whitening some sections of the night, revealing the excavations' wet entrails and conjuring up a file of heavy shadows, borne down by lofty burdens, tramping in a black and black-bunged impasse, and jolting against the eddies. When great guns were discharged all the vault of heaven was lighted and lifted and then fell darkly back. "Look out! The open crossing!" A wall of earth rose in tiers before us. There was no outlet. The trench came to a sudden end--to be resumed farther on, it seemed. "Why?" I asked, mechanically. They explained to me: "It's like that." And they added, "You stoop down and get a move on."