In 2015, the global refugee crisis moved centre stage in Europe as never before. Uprooted by persecution and conflicts old and new, hundreds of thousands of men, women and children looked to Europe as a place of safety. One year on, following the sealing of successive borders, images of thousands of people trudging through the Balkans have stopped. But the humanitarian crisis has not. Almost 60,000 refugees and migrants are stranded in Greece, the majority in appalling conditions.