1.   A few flights down, they propped up debris blocking their way, leaving a small passageway to slip through.

2.   On the ground floor, every empty space is taken by cars and motorcycles, allowing only a small passageway for others to pass.

3.   They squeeze through small passageways where rock closes in so close they can barely raise their heads to see where to go next.

4.   At least three survivors had been located, but crews could only open a small passageway to pass water bottles while trying to clear away debris with heavy equipment.