These tombs are not complete. Each had its chapel; but those chapels stood far away in the plain, at Gûrneh, at the Ramesseum, at Medinet Habû; and they have already been described. The Theban rock, like the Memphite pyramid, contained only the passages and the sepulchral chamber. During the daytime, the pure Soul was in no serious danger; but in the evening, when the eternal waters which flow along the vaulted heavens fall in vast cascades adown the west and are engulfed in the bowels of the earth, the Soul follows the bark of the Sun and its escort of luminary gods into a lower world bristling with ambuscades and perils. For twelve hours, the divine squadron defiles through long and gloomy corridors, where numerous genii, some hostile, some friendly, now struggle to bar the way, and now aid it in surmounting the difficulties of the journey. Great doors, each guarded by a gigantic serpent, were stationed at intervals, and led to an immense hall full of flame and fire, peopled by hideous monsters and executioners whose office it was to torture the damned. Then came more dark and narrow passages, more blind gropings in the gloom, more strife with malevolent genii, and again the joyful welcoming of the propitious gods. At midnight began the upward journey towards the eastern regions of the world; and in the morning, having reached the confines of the Land of Darkness, the sun emerged from the east to light another day. The tombs of the kings were constructed upon the model of the world of night. They had their passages, their doors, their vaulted halls, which plunged down into the depths of the mountain. Their positions in the valley were determined by no consideration of dynasty or succession. [Illustration: Fig. 156.--Plan of tomb of Rameses IV.] [Illustration: Fig. 157.--Plan of tomb of Rameses IV., from Turin papyrus.] [Illustration: Fig. 158.--Plan of tomb of Seti I.]