POWDER RIVER AND SHOBON
Powder River was founded as a stop on the Wyoming & Northwestern on it's way to Lander. Though it's the biggest town between Casper and Shoshoni, a distance of nearly 100 miles, that's not really saying much - a few years ago it's total population was about 35 people.
Shobon isn't even that big - it's just the spot where the CNW tracks took off from the CB&Q line and headed to Lander. Until 1943, when the CNW abandoned its own line from Casper and began running on the CB&Q's line to near Shoshoni, Shobon didn't even exist, except perhaps as a passing siding out in the middle of nowhere.
THE MODEL RAILROAD
This page shows both Powder River and Shobon Junction, separated by about 80 miles in reality, and by maybe six feet on the layout (that's called "selective compression").
The plan for these spots:
On this diagram, west is towards the left, and east is towards the right. The right end of the mainline is coming from Casper, and at the left it is proceeding west towards Shobon.
Powder River is represented only by some stock pens. The actual town is three or four miles further west. Stock shipping is a very seasonal business, and of course uses stock cars. Since stock has special handling requirements (periodic feeding, watering and exercizing), little if anything else was shipped on a stock train. So most trains will pass Powder River by without even slowing. There isn't even a team track here.
Shobon, as I stated earlier, is the junction point where the CB&Q splits from the CNW, with the Burlington going north through Wind River Canyon to Thermopolis, and the CNW heading southwest about 23 miles to the end of track in Riverton. In this diagram, the CNW is the red track that heads off the line from Powder River and into a tunnel at the left end of the central peninsula on the layout.
The scenery in this area of the layout will be semi-arid high plains, with tall, separated clumps of grass mixed in liberally with a lot of sagebrush and tumbleweeds. If one looks closely, one might see a jackrabbit or twenty in amongst the sagebrush, and maybe even a small herd of Antelope.
Right after passing Shobon, as one approaches the Wind River Canyon, one sees less sagebrush and more grasses and even a few trees, as the Wind River is very close by. The Boysen Reservoir and Dam are prominent scenic features in this area.