Amtrak No. 5, the California Zephyr, passes Rocky siding on the afternoon of October 23, 2011. Three levels of track can be seen here, and Amtrak will negotiate them all within a few minutes. The train is headed for Little 10 curve which will swing it to the middle track. Number 5 will then head east and encircle the long Big 10 Curve and then be on the closest track at Clay, ready to continue the long climb up the front range of the Rocky Mountains to the Moffat Tunnel.
