Rail Road Engineering - spectacular travel in Canada

Rail Road engineering is some of the finest engineering.   The trains have to keep on schedule, and the tracks have to be always passable.  

In the image above, avalanche/dry landslide sheds deflect rock over the tracks on the Canadian National east of Vancouver, Canada.  The telephone poles near the sheds have wires which trip an alarm if a rock hits the wire.  

Here is geology in constant flux, and our RR engineer's telepathy efforts.

The Canadian Pacific track is on the south shore of the river.   I may have the CN and CP reversed & and the Frazer and the Thompson - I am working on this.  Any help out there?

Pretty neat - the horses along the valley have the same colorizations as the geology!