We left Des Moines with less than a month of travelling in the US left. And so much ground to cover! But luckily, there wasn't much to see on the next 600 miles. So we drove quite quickly across the remaining part of Iowa, up along the border with Nebraska and across large parts of South Dakota. Fields upon fields and prairie as far as the eye can see. By noon the next day we reached the first attraction: the Badlands National Park. The colors of the many layers of earth and rock were nice to see, but we particularly liked the quite close encounter with the prairie dogs. But beware of touching them, they can spread diseases!