In the great glittering cavern with the dark shut out she took a seat on a wooded bench and the evening's oppression lifted. Harry was right--it was beautiful; and her gaze travelled the smooth surface of the walls, the blocks for which had been selected for their purity and dearness to obtain this opalescent, translucent effect. "Look! Here we go--oh, boy!" cried Harry. A band in a far corner struck up "Hail, Hail, the Gang's All Here!" which echoed over to them in wild muddled acoustics, and then the lights suddenly went out; silence seemed to flow down the icy sides and sweep over them. Sally Carrol could still see her white breath in the darkness, and a dim row of pale faces over on the other side. The music eased to a sighing complaint, and from outside drifted in the full-throated remnant chant of the marching clubs. It grew louder like some pæan of a viking tribe traversing an ancient wild; it swelled--they were coming nearer; then a row of torches appeared, and another and another, and keeping time with their moccasined feet a long column of gray-mackinawed figures swept in, snow-shoes slung at their shoulders, torches soaring and flickering as their voice rose along the great walls. The gray column ended and another followed, the light streaming luridly this time over red toboggan caps and flaming crimson mackinaws, and as they entered they took up the refrain; then came a long platoon of blue and white, of green, of white, of brown and yellow. "Those white ones are the Wacouta Club," whispered Harry eagerly. "Those are the men you've met round at dances." The volume of the voices grew; the great cavern was a phantasmagoria of torches waving in great banks of fire, of colors and the rhythm of soft-leather steps. The leading column turned and halted, platoon deploys in front of platoon until the whole procession made a solid flag of flame, and then from thousands of voices burst a mighty shout that filled the air like a crash of thunder, and sent the torches wavering. It was magnificent, it was tremendous! To Sally Carol it was the North offering sacrifice on some mighty altar to the gray pagan God of Snow. As the shout died the band struck up again and there came more singing, and then long reverberating cheers by each club. She sat very quiet listening while the staccato cries rent the stillness; and then she started, for there was a volley of explosion, and great clouds of smoke went up here and there through the cavern--the flash-light photographers at work--and the council was over. With the band at their head the clubs formed in column once more, took up their chant, and began to march out. "Come on!" shouted Harry. "We want to see the labyrinths down-stairs before they turn the lights off!"