No sooner had Carthoris and the others joined me than we commenced the transportation of our men through the submerged passage to the mouth of the gangways which lead from the submarine pool at the temple end of the watery tunnel to the pits of Issus.
Many trips were required, but at last all stood safely together again at the beginning of the end of our quest. Five thousand strong we were, all seasoned fighting-men of the most warlike race of the red men of Barsoom.
As Carthoris alone knew the hidden ways of the tunnels we could not divide the party and attack the temple at several points at once as would have been most desirable, and so it was decided that he lead us all as quickly as possible to a point near the temple's centre.
As we were about to leave the pool and enter the corridor, an officer called my attention to the waters upon which the submarine floated. At first they seemed to be merely agitated as from the movement of some great body beneath the surface, and I at once conjectured that another submarine was rising to the surface in pursuit of us; but presently it became apparent that the level of the waters was rising, not with extreme rapidity, but very surely, and that soon they would overflow the sides of the pool and submerge the floor of the chamber.
For a moment I did not fully grasp the terrible import of the slowly rising water. It was Carthoris who realized the full meaning of the thing—its cause and the reason for it.
"Haste!" he cried. "If we delay, we all are lost. The pumps of Omean have been stopped. They would drown us like rats in a trap. We must reach the upper levels of the pits in advance of the flood or we shall never reach them. Come."
"Lead the way, Carthoris," I cried. "We will follow."
At my command, the youth leaped into one of the corridors, and in column of twos the soldiers followed him in good order, each company entering the corridor only at the command of its dwar, or captain.
Before the last company filed from the chamber the water was ankle deep, and that the men were nervous was quite evident. Entirely unaccustomed to water except in quantities sufficient for drinking and bathing purposes the red Martians instinctively shrank from it in such formidable depths and menacing activity. That they were undaunted while it swirled and eddied about their ankles, spoke well for their bravery and their discipline.
I was the last to leave the chamber of the submarine, and as I followed the rear of the column toward the corridor, I moved through water to my knees. The corridor, too, was flooded to the same depth, for its floor was on a level with the floor of the chamber from which it led, nor was there any perceptible rise for many yards.