The wind was unfavourable to a species of launch not calculated for shallow water. In many places we were obliged to push ourselves along with iron-pointed sticks. Often the sunken rocks just beneath the surface obliged us to deviate from our straight course. At last, after three hours' sailing, about six in the evening we reached a place suitable for our landing. I jumped ashore, followed by my uncle and the Icelander. This short passage had not served to cool my ardour. On the contrary, I even proposed to burn 'our ship,' to prevent the possibility of return; but my uncle would not consent to that. I thought him singularly lukewarm. "At least," I said, "don't let us lose a minute." "Yes, yes, lad," he replied; "but first let us examine this new gallery, to see if we shall require our ladders." My uncle put his Ruhmkorff's apparatus in action; the raft moored to the shore was left alone; the mouth of the tunnel was not twenty yards from us; and our party, with myself at the head, made for it without a moment's delay. The aperture, which was almost round, was about five feet in diameter; the dark passage was cut out in the live rock and lined with a coat of the eruptive matter which formerly issued from it; the interior was level with the ground outside, so that we were able to enter without difficulty. We were following a horizontal plane, when, only six paces in, our progress was interrupted by an enormous block just across our way. "Accursed rock!" I cried in a passion, finding myself suddenly confronted by an impassable obstacle. Right and left we searched in vain for a way, up and down, side to side; there was no getting any farther. I felt fearfully disappointed, and I would not admit that the obstacle was final. I stopped, I looked underneath the block: no opening. Above: granite still. Hans passed his lamp over every portion of the barrier in vain. We must give up all hope of passing it. I sat down in despair. My uncle strode from side to side in the narrow passage. "But how was it with Saknussemm?" I cried. "Yes," said my uncle, "was he stopped by this stone barrier?"