In Britain it had been a year without summer. Wet spring had merged imperceptibly into bleak autumn. For months the sky had remained a depthless grey. Sometimes it rained, but mostly it was just dull, a land without shadows. It was like living inside Tupperware. And here suddenly the sun was dazzling in its intensity. Iowa was hysterical with colour and light. Roadside barns were a glossy red, the sky a deep, hypnotic blue; fields of mustard and green stretched out before me. Flecks of mica glittered in the rolling road. And here and there in the distance mighty grain elevators, the cathedrals of the Middle West, the ships of the prairie seas, drew the sun’s light and bounced it back as pure white. Squinting in the unaccustomed brilliance, I followed the highway to Otley.

My intention was to retrace the route my father always took to my grandparents’ house in Winfield – through Prairie City, Pella, Oskaloosa, Hedrick, Brighton, Coppock, Wayland and Olds. The sequence was tattooed on my memory. Always having been a passenger before, I had never paid much attention to the road, so I was surprised to find that I kept coming up against odd turns and abrupt T-junctions, requiring me to go left here for a couple of miles, then right for a few miles, then left again and so on. It would have been much more straightforward to take Highway 92 to Ainsworth and then head south to Mount Pleasant. I couldn’t imagine by what method of reasoning my father had ever settled on this route, and now of course I never would know. This seemed a pity, particularly as there was almost nothing he would have liked better than to cover the dining-room table with maps and consider at length possible routings. In this he was like most Midwesterners. Directions are very important to them. They have an innate need to be oriented, even in their anecdotes. Any story related by a Midwesterner will wander off at some point into a thicket of interior monologue along the lines of ‘We were staying at a hotel that was eight blocks northeast of the state capitol building. Come to think of it, it was northwest. And I think it was probably more like nine blocks. And this woman without any clothes on, naked as the day she was born except for a coonskin cap, came running at us from the southwest … or was it the southeast?’ If there are two Midwesterners present and they both witnessed the incident, you can just about write off the anecdote because they will spend the rest of the afternoon arguing points of the compass and will never get back to the original story. You can always tell a Midwestern couple in Europe because they will be standing on a traffic island in the middle of a busy intersection looking at a wind-blown map and arguing over which way is west. European cities, with their wandering streets and undisciplined alleys, drive Midwesterners practically insane.

This geographical obsession probably has something to do with the absence of landmarks throughout middle America. I had forgotten just how flat and empty it is. Stand on two phone books almost anywhere in Iowa and you get a view. From where I was now I could look out on a sweep of landscape about the size of Belgium, but there was nothing on it except for a few widely separated farms, some scattered stands of trees and two water-towers, brilliant silver glints signifying distant, unseen towns. Far off in the middle distance a cloud of dust chased a car up a gravel road. The only things that stood out from the landscape were the grain elevators, but even they looked all the same, and there was nothing much to distinguish one view from another.