BIALOWIEZA, Poland — Hiking through the Bialowieza Forest is a journey through prehistoric Europe. It's one of the last remaining old-growth forests on the continent, home to the rare European bison.
It's not bison that stop hikers in their paths these days, though. It's Europe's newest border wall: a 15-foot-tall metal fence topped with razor wire and security cameras demarcating the line between Poland and Belarus. Poland finished this 116-mile wall a year ago in response to an uptick of migrants illegally crossing the border.
