The path now led them to a place where the three infernal rivers, Acheron, Cocytus, and Styx, met in one deep, black, and boiling flood. Here there kept guard the grim ferryman Charon, an infernal deity of fearful aspect. A long gray beard fell all tangled and neglected from his chin; his filthy and ragged garments were knotted over his shoulders; his eyes glittered with baleful light. He sat on a great black barge, which he pushed to and fro across the river with a pole. An immense crowd of shades was incessantly pouring to the banks,--young and old, matrons and virgins, warriors who had endured the toils of a long life and tender boys who had died while yet under the care of their parents. All were eager to cross the stream, and stretched their hands in earnest entreaty to Charon to admit them into his boat. But the sullen ferryman only consented to receive some; others he drove back with his pole, and would on no account permit them to cross. Æneas was amazed at this scene, and asked the Sibyl to explain to him its meaning. "You see before you," she replied, "the deep pools of Cocytus, and the Stygian lake, by which the Gods are accustomed to swear when they take an oath which they dare not violate. All that crowd which Charon will not ferry across is composed of persons who after death received not the rites of burial; those only are permitted to enter the boat who have been interred with proper ceremonies. As for the others, they wander unquiet about these shores for a hundred years before they are allowed to cross to the regions beyond."