Only four presidents on Mt Rushmore right? Well, maybe not. Nature may have provided a fifth. Drive 1.3 miles northwest from the Mt Rushmore parking entrance (away from Keystone) on Hwy 244 and look for a sheer rock face that's the backside of Mt Rushmore. Pull over safely and then decide just which president might be honored by the rather lurid shape on the rock face. Which head of state it represents may depend on your politics.