Transcription: By now we were all beginning to feel the first pangs of thirst. We needed to replenish our stock of water very soon. We were now in a mighty natural cavern about a hundred feet wide and a hundred and fifty feet high. Evidently the earth had been cast apart here by some violent commotion leaving a vast gap in which we were the first people to penetrate. I leaned my hand on the rock and found it had turned black. A coal minecried. A coal mine without miners, said my uncle. This gallery was not cut by man. On the dark walls was written the whole history of the coal period. A geologist could have ...