The pounding of his own heart was suffocating, drowning the distant drum, as he thrust through the choking vegetation at the foot of the cliff. On the gray rock above the green mask appeared a curious carven symbol, as he had seen it years ago, when its discovery led him and Richard Ballville to the hidden cavern. He tore aside the clinging vines and fronds, and his breath sucked in at the sight of a heavy iron door set in the narrow mouth that opened in the granite wall. McGrath's fingers were trembling as they swept over the metal, and behind him he could hear Ali breathing heavily. Some of the white man's excitement had imparted itself to the Arab. McGrath's hands found the three knobs, forming the apices of a triangle--mere protuberances, not apparent to the sight. Controlling his jumping nerves, he pressed them as Ballville had instructed him, and felt each give slightly at the third pressure. Then, holding his breath, he grasped the bar that was welded in the middle of the door, and pulled. Smoothly, on oiled hinges, the massive portal swung open. They looked into a wide tunnel that ended in another door, this a grille of steel bars. The tunnel was not dark; it was clean and roomy, and the ceiling had been pierced to allow light to enter, the holes covered with screens to keep out insects and reptiles. But through the grille he glimpsed something that sent him racing along the tunnel, his heart almost bursting through his ribs. Ali was close at his heels. * * * * * The grille-door was not locked. It swung outward under his fingers. He stood motionless, almost stunned with the impact of his emotions. His eyes were dazzled by a gleam of gold; a sunbeam slanted down through the pierced rock roof and struck mellow fire from the glorious profusion of golden hair that flowed over the white arm that pillowed the beautiful head on the carved oak table. "_Constance!_" It was a cry of hunger and yearning that burst from his livid lips. Echoing the cry, the girl started up, staring wildly, her hands at her temples, her lambent hair rippling over her shoulders. To his dizzy gaze she seemed to float in an aureole of golden light. "Bristol! Bristol McGrath!" she echoed his call with a haunting, incredulous cry. Then she was in his arms, her white arms clutching him in a frantic embrace, as if she feared he were but a phantom that might vanish from her. For the moment the world ceased to exist for Bristol McGrath. He might have been blind, deaf and dumb to the universe at large. His dazed brain was cognizant only of the woman in his arms, his senses drunken with the softness and fragrance of her, his soul stunned with the overwhelming realization of a dream he had thought dead and vanished for ever.