There were buffalo grazing in the field next to the highpoint marker, and a brief scan with the binoculars failed to locate the nearby stone monument marking the intersection of Wyoming, Colorado and Nebraska. It's easy to get turned around on the gravel roads that lead to the highpoint, but the various 'This is an intersection' and other road signs all have spray-painted directional arrows to I-80, which made us laugh when we noticed it.
The most interesting part of the journey were the missile silos. They were vaguely inconspicuous things with signs like "E31" in that blocky, only-a-government-would-use-something-like-this font, surrounded by barbed wire. We also passed what looked at first glance to be a patrol car idling near one of the structures. We thought it was a speed trap, and wondered how stupid it must be to patrol a largely abandoned rural road. But then we noticed that the gates were closed behind the car, and he'd have no way of pulling anyone over. We also noticed that the car had US government plates. Apparently, they drop people off for their shift down in the silo, and then leave, to, er, avoid drawing attention to the place by parking there. Some time later, we passed a US government 18-wheeler apparently delivering food and supplies to one of these bunkers. It all seemed very 1960s.
If you're in the area, don't bother stopping at Agate Fossil Beds National Monument, unless you have an abiding interest in "fossilized beaver holes" that look like little more than, um, holes in the rock. In any event, the drive through the Nebraska panhandle is very nice, and the bluffs along the North Platte are very scenic. And if E31 ever opens up when you're driving by, remember to duck and cover.