XIX.

Thus on they moved through thicket, glen, and brake, By precipice, and crag, and torrent brink, And yawning chasm that made the boldest quake, Till without end the dark ravine they think; And wildered many a foot by flaming link, That guided few save them the links who bore: Benighted thus till with fatigue they sink, Steep crag and glen profound they wandered o’er, Their beacon fires alight--but none can find a shore.