“But we shall be stifled.”
“We shall not be stifled at all. The gallery is widening, and if it becomes necessary, we shall abandon the raft, and creep into a crevice.”
“But the water—the rising water?”
“There is no more water, Axel; only a lava paste, which is bearing us up on its surface to the top of the crater.”
The liquid column had indeed disappeared, to give place to dense and still boiling eruptive matter of all kinds. The temperature was becoming unbearable. A thermometer exposed to this atmosphere would have marked 150°. The perspiration streamed from my body. But for the rapidity of our ascent we should have been suffocated.
But the Professor gave up his idea of abandoning the raft, and it was well he did. However roughly joined together, those planks afforded us a firmer support than we could have found anywhere else.
About eight in the morning a new incident occurred. The upward movement ceased. The raft lay motionless.
“What is this?” I asked, shaken by this sudden stoppage as if by a shock.
“It is a halt,” replied my uncle.
“Is the eruption checked?” I asked.
“I hope not.”
I rose, and tried to look around me. Perhaps the raft itself, stopped in its course by a projection, was staying the volcanic torrent. If this were the case we should have to release it as soon as possible.