I know this isn’t MODEL railroading, but the “name that locomotive” type threads seem to be popular.
The idea is to find an intersting railroad site on one of the satelite maps sites and have others figure out what it is. The one who gets the answer right gets to choose the next location. So Here is the first location:
Zooming out on the map will quickly show this is in Colorado just north of Denver (about 3 miles from my house specifically). The four tracks were the junction of three branch lines. The first easy question is what is the railroad, the harder question is what are the three branch lines? And a bonus question is where do the tracks go in each direction north, south, east, and west?