[A boy stands by the hanging laundry in the makeshift refugee camp at the northern Greek border point of Idomeni, Greece, Thursday, March 31, 2016. More than 50,000 migrants remain stranded in Greece following border restrictions and closures by Austria and Balkan nations. (AP Photo/Darko Vojinovic)]IDOMENI, Greece (AP) — Through the coils of razor wire and a fence that stretches across green fields, the gathered people can see what has become a forbidden land — Macedonia and its still-snow-capped mountains, the route they had hoped to take on their journey northward through the Balkans to the more prosperous heartland of Europe.