Norfolk Southern 3641 (ET44AC) leads an oil train around a wind break made up of loaded gravel hoppers which have been welded to the tracks at the Big Ten Curve in Rocky, Colorado.

Norfolk Southern 3641 (ET44AC) heads into Coal Creek Canyon after exiting Tunnel #1 at Plainview, Colorado.

Norfolk Southern 3641 (ET44AC) leads an oil can train through Big Ten Curve on the Moffat Tunnel Sub as it heads to Denver.

Norfolk Southern #3641 (ET44AC) leads an oil can train through Big Ten Curve as it runs on the Moffat Tunnel Sub.