At that moment a frantic gonging came faint but clear from the direction of the entrance to Kosanna. Rok instantly deduced the cause. "The Dragon Men must be attacking Kosanna!"

Gesturing the black leader to kneel, Roya was aboard the massive back, one hand clutching to a spike for support. Elees and the men were with her and Roya's voice rang on the jungle air. "Go for Toka!"

The colossus heaved up running. Down the slope it tore with a battle roar. With a combined roaring that filled the air with deafening thunder the mass of Big Snakes swarmed in behind—all the armor-plated ones first. Through the dense jungle as though it were grass the colossal black leader tore the way. He burst clear and shot across the Big Brown in a geysering spray to plunge into the luminous cavern.

The angrily roaring monster's huge head was stretched out low over the deep water—and Roya saw the vicious fish were not present! But the armored monster, as did the others close behind, beat the water to colored foam.

The monstrous spike-back raced around another bend and tore for that grill of green columns—but that massive structure was drawn into the vaulted roof! There was nothing to impede the way!

"Listen to the sounds from Kosanna!" Elees cried.

"The fight's on!" Rok yelled in helpless anxiety.

"Oh, Toka!" Roya prayed.

"Here we come!" Old Ledo chanted.

The cavern opened into Kosanna. The angrily roaring spike-back burst clear and the wild battling spread away in all its detail.