Register Cliff, near present Guernsey, Wyo., is one of three large “registers of the desert” in Wyoming where Oregon-, California- and Utah-bound emigrants carved their names on rock. Many of the inscriptions are from the peak years of Oregon Trail travel in the 1840s and 1850s. The area close to Register Cliff was the first night’s camp west of Fort Laramie. Today, this site is a National Historic Site.