The sign on the highway claims you’re entering the Gloss Mountains. It’s a typo. This exotic area has always been referred to by locals as the GLASS Mountains. Located near the Cimarron River in Major County near Fairview, OK , Gloss Mountains State Park has hiking trails, picnic facilities and a gorgeous view of an unusual landscape. The glass (or gloss) moniker comes from the Selenite or isinglass that sparkles in the red dirt mesas.