Describe the prisoner. Chapters 7-9

From the text:

Over the rocks, in the crevice of which the candle burned, there was thrust out an evil yellow face, a terrible animal face, all seamed and scored with vile passions. Foul with mire, with a bristling beard, and hung with matted hair, it might well have belonged to one of those old savages who dwelt in the burrows on the hillsides. The light beneath him was reflected in his small, cunning eyes which peered fiercely to right and left through the darkness, like a crafty and savage animal who has heard the steps of the hunters.