Driving eastwards on Interstate 90 in South Dakota , we ran into some very unpredictable weather. When we started, it was bright and sunny but suddenly out of the blue, the skies were covered with thick black rain clouds. We were on our way to the Badlands National Park and before we could decide whether to go ahead with the plans or call it a day, it started pouring. The rains were lashing hard on the window panes and we could barely see the signboards. Our gut sense was that we had at least one more hour to drive. Despite the thunderstorms and lightning, we braved our way towards the Park. We thought that it would be much better to drive towards our destination rather than face the same bad weather to go back to the hotel. We exited at a city called Wall, which is named after the sight of Badlands Wall and just followed the map.