Where it did get that route from?
Assuming that you are talking to me, the last shot was from the Rollins Pass 1915 Winter, a payware route from TrainzItalia. Earlier screenies were from Rollins Pass 1915 (also payware) and Clear Lake V2 (on the DLS) both modified for my own use.
http://www.trainzitalia.com/vbulletin/forumdisplay.php?f=68