The darkness before her resolved into a rickety bridge of vines and wooden slats just wide enough for one person to cross alone. The bridge spanned an immense crevasse, infinitely deep and filled with a boiling sea of fire. Piper took hold of the viny guide-ropes at waist-height and began walking across the bridge. Abruptly, the vines parted and the bridge swung downward toward the roaring flames. Piper pulled a knotted cord from around her waist and hurled one end toward the far side of the crevasse. The hook on the end of the cord caught on a rocky prominence. Hand over hand, Piper pulled herself up.