The Antipathy of Iowa in America

The furthest city and country from Des Moines, Iowa is Perth, Australia. The train crews use scuba equipment while in the tunnel. Getting to watch a train come through while the fans were blowing out the exhaust is one of the top five things I've ever seen in my life. There's incredible lengths they went to to de-electrify this tunnel. If you map these incorrectly, the positive train control will not stop the train in the right place during an emergency.