Three SD70ACes lead this westbound loaded sand train through the canyon between Rollins and Tolland. The second and third units are so dirty, they are great 21st century representatives of Grande and Espee units from 40 years ago! That'll happen when you are only making 7-10 MPH through the tunnels in the Tunnel District!
For those interested, note that I recorded some sound of these guys pulling...you can listen to them from this page.
