"Here," said Balin, "in the old days we used always to keep watchmen, and that door behind leads into a rock-hewn chamber that was made here as a guardroom. There were several places like it round the Mountain. But there seemed small need for watching in the days of our prosperity, and the guards were made over comfortable, perhaps – otherwise we might have had longer warning of the coming of the dragon, and things might have been different." (13.66)

But in the end, when Bilbo actually began to stamp on the floor, and screamed out "light!" at the top of his shrill voice, Thorin gave way, and Oin and Gloin were sent back to their bundles at the top of the tunnel.

After a while a twinkling gleam showed them returning, Oin with a small pine-torch alight in his hand, and Gloin with a bundle of others under his arm. Quickly Bilbo trotted to the door and took the torch; but he could not persuade the dwarves to light the others or to come and join him yet. As Thorin carefully explained, Mr. Baggins was still officially their expert burglar and investigator. If he liked to risk a light, that was his affair. They would wait in the tunnel for his report. (13.17)