History Channel Extreme train

So i was watching the Extreme trains episode that i got off itunes. IT was the one mention earlier when it aired on here about how they said the 844 was the oldest continuous running steam and we all disagreed. lol Well i dont know if this was also mentioned but for a few minutes the UP was not the only railroad they showed in the show. There was a narrow gauge. can you guess it?


The Loop was also shown in the show for a few minutes and also the mine. He takes a track patrol car over the loop, The train not shown, probably because the diesel but it does look like a camera is on the back of the train.

I did not know if anyone else mentioned that so I decided to post it.