So the lumbermen began cutting down trees from a hundred to two hundred feet high. These were to make a frame­work of piling for the great trestle bridge. Word came to workmen that in the water of Great Salt Lake the railroad pathway would be at the beginning a solid bank of earth for four and a half miles. Then it was said that, of the twenty- three miles of trestle, eleven in the end were to be filled with earth. So of the thirty-one and a half miles through water nearly twenty were to be a solid ridge of rock and earth sixteen feet wide at the top and seventeen feet above the water. This word set to work the great steam shovels at Promontory Point where an arm of the mountain runs down into the lake. And it set them to work at Hogup Mountains, sixteen miles west of the lake shore. These mountains came up through the level cover of lake bed that 21