Although the works of the Liverpool and Manchester Railway are of a much less formidable character than those of many lines that have since been constructed, they were then regarded as of a stupendous kind. Indeed, few works of such magnitude had before been executed in England. It had been the engineer's original intention to carry the railway from the north end of Liverpool round the red sandstone ridge on which the upper part of the town is built, and also round the higher rise of the coal formation at Rainhill, by following the natural levels to the north of Knowsley. But the opposition of the land-owners having forced the line more to the south, it was rendered necessary to cut through the hills, and go over the high grounds instead of round them. The first consequence of this alteration in the plans was the necessity for constructing a tunnel under the town of Liverpool a mile and a half in length, from the docks at Wapping to the top of Edgehill; the second was the necessity for forming a long and deep cutting through the red sandstone rock at Olive Mount; and the third and worst of all was the necessity for ascending and descending the Whiston and Sutton hills by means of inclined planes of 1 in 96. The line was also, by the same forced deviation, prevented passing through the Lancashire coal-field, and the engineer was compelled to carry the works across the Sankey valley at a point where the waters of the brook had dug out an excessively deep channel through the marl-beds of the district. The principal difficulty was experienced in pushing on the works connected with the formation of the tunnel under Liverpool, 2200 yards in length. The blasting and hewing of the rock were vigorously carried on night and day; and the engineer's practical experience in the collieries here proved of great use to him. Many obstacles had to be encountered and overcome in the formation of the tunnel, the rock varying in hardness and texture at different parts. In some places the miners were deluged by water, which surged from the soft blue shale found at the lowest level of the tunnel. In other places beds of wet sand were cut through, and there careful propping and pinning were necessary to prevent the roof from tumbling in until the masonry to support it could be erected. On one occasion, while Stephenson was absent from Liverpool, a mass of loose moss-earth and sand fell from the roof, which had been insufficiently propped. The miners withdrew from the work; and on the engineer's return he found them in a refractory state, refusing to re-enter the tunnel. He induced them, however, by his example, to return to their labors; and when the roof had been secured, the work went on again as before. When there was danger, he was always ready to share it with the men; and, gathering confidence from his fearlessness, they proceeded vigorously with the undertaking, boring and mining their way toward the light.