. >> reporter: in a wood just outside the town of bihac stands a derelicrmt student ory. the building may have power and running water, but it's still an overcrowd slum. in short order, it's become a potent symbol of the three-year migrant crisis dividing the european union. for the 500 or so inhabitants, it's a way station on their dream-laden march towards sanctuary or grter prosperity. for opponents of immigration, it's a snapshot of a surge heading their way. for volunteers of the bosnian red cross, this is simply a place of humanity. >> it's very, very hard when you see all those children that are right now suffering.ey on't have a decent childhood. >> reporter: spokesman amir draganivic. >> we are trying to do our best to find them, let's say, to make them like thearat their homes. >> reporter: proximity to the long, porous border with croatia is the reheasonre here. if they can enter croatia, they are effectively inside the eeruropean union theoretically they can cross natio documents.es without about 200 migrants ares amping in thield two miles from an offici cros