From Guernsey continue along the emigrant trails to Casper (take US. 26 to I-25 and then travel northwest through Douglas to Casper). As a side trip, you may want to visit Fort Fetterman, a state historic site northwest of Douglas, which was an embarkation point for travelers on the Bozeman Trail in the 1860s and for military troops headed into the Powder River Basin during the Sioux War of 1876. You can overnight in Douglas or in Casper.

When in Casper, visit the National Historic Trails Interpretive Center and the newly redesigned Fort Caspar, a replica of the original military post. The newest attraction there beckons you to climb aboard a stagecoach and take a ride over the trails of central Wyoming. You can also ride a wagon across the river, pull a Mormon handcart and listen to stories told by pioneers and Native Americans.