When I first visited Fort Laramie (my favorite Wyoming fort), I was surprised that it didn't look like a Hollywood version of a western fort. The buildings weren't made of logs, and there was no stockade. I learned that that's because there were few trees in the area.
As you can see, Fort Caspar, a hundred or so miles from Fort Laramie, didn't suffer from a shortage of wood and looks more like the quintessential western fort.
As a bit of trivia, although the city of Casper is spelled with an "e", the fort is not.







