I recently travelled through Ukraine and stopped en route at the 'Tunnel of Love', a section of forested industrial railway near Klevan. These beautiful green archways are carved by passing goods trains. Armed with tropical-strength mosquito repellent (thanks Tripadvisor!), my friend and I walked for an hour or so along the verdant tracks early in the morning; as we wandered along the sun just started to burn through the early morning mist.