The distant shock also re-echoed in the gallery they were traversing when they heard it. Fragments of earth fell from the roof and a great rock suddenly projected just above old Ivan's head, while the wall on the right hand bulged out. The miners rushed forward terrified, but Ivan stopped them and made them go more slowly. Some cowards flung themselves on their stomachs and hid their faces, but they were lifted up and obliged to proceed. The gallery they were now in became narrower and narrower. After having begun their march five abreast, they could now only go two by two with difficulty. A few minutes more, and they were obliged to walk in single file. Then the chief miner let the rest go in front of him and took the last place. He was among the few who had not lost their heads and acted thus, lest some cowards might remain behind stretched on the ground in an access of blind fear. The gallery became ever more contracted. However, that did not seem to trouble old Ivan, who continued to advance with confidence. He still saw distinctly the white Apparition Who shed a mysterious radiance in the darkness. From time to time he murmured, "Here I am Lord, here I am!" and that renewed his strength. Even now when his two elbows touched the walls, and the lowness of the rocky roof above his head prevented him raising his torch which he was obliged to hold in front of him a little slanted and at arm's length, the old man never doubted that he was guided by our Lord in person, Who pointed him out the way. Behind him the miners were half suffocated because the thick smoke of the torches filled the narrow passage in which it was difficult to breathe, as the confined atmosphere had been unchanged for an immeasurable time. This was apparent by the way in which the flames of the torches lengthened themselves, seeming to seek the oxygen they required, and then burning dimly in the darkness. All at once Ivan halted. He was confronted by a dead wall without any apparent outlet. However, doubt was not possible for him, for he had distinctly seen the white Apparition pass through the wall. Now it was waiting for him on the other side of the wall which had so unexpectedly intervened. "He has stopped there; I have seen Him!" Ivan stretched out his lean arm in front of him, no one knew why. The chief miner decided to make a last attempt, "Let us dig, my children! We must make a way for ourselves." But though he gave the order, he doubted whether there was anything on the other side of the wall but a mass of earth, rocks and ore. Fortunately, just here the passage was a little wider and they could work three abreast. They set to work bravely. However, the flames of the torches exhausted the air and they grew very dim. Their smoke blinded and half-choked the miners, but they persisted and dug huge holes in the earth which was not very hard.