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I chased this train from Leavenworth to Scenic. This train derailed just beyond Tonga near the Foss River Bridge. Here Extra 6481 West is about at the end of Chumstick Valley. Curving to its left, it will go through a series of tunnels, and rejoin the original line near Winton.
Shoving hard on caboose 10547 is a three unit helper set. Disk 6