Was just musing whether anyone has hit any limits on terrain height in RS? I believe both MSTS and TRS had some sort of altitude cap which meant if you felt expansive and decided to have a go at, oh let's say the Central of Peru you were in trouble. Either because the sim can't go that high or can't extend the difference in height between the plains and the summit. In the case of Peru the Galera summit tunnel under Mount Meiggs is at 4,783m/15,692 ft and the surrounding peaks even higher.
Is RS the first sim that would allow an intrepid route builder to have a serious attempt at modelling part of this route? Quite what the AI and/or despatcher would make of all those zig-zags and turnbacks is another matter!
Also, strange to relate, Google Earth actually appears to have higher resolution data following another interesting Peruvian route - Huancayo to Huancavelica - than it does for western Canada following the former BC line.