The Night of the Red-Eyed Madmen - S1-E11
Continuity mistake: Half way through this episode, the private train is standing still surrounded by dirt and short grass. However, when the private boxcar door opens, there are very large trees and bushes a few feet from the door.
The Night of the Red-Eyed Madmen - S1-E11
Continuity mistake: The opening of the last scene shows the train moving through an area with large trees along both sides of the track. The closing scene shows the train in an arid area with uneven rotting wooden posts and dried up sage grass.