Amtrak No. 6, the California Zephyr, passes the hopper car windbreak on Big 10 Curve west of Rocky, Colorado, on May 29, 2011. In the background is some of the sprawl of Arvada, and if you look closely toward the top of the photo above the last car of the train, the west end of Leyden Siding can be seen, with its small (from this distance) silver signal box visible. It will be about 6 1/2 more track miles before No. 6 is at Leyden.