Geology 



here was dim, but it was possible to see one's way about, 

 and after walking out of the pool and the zone of falling 

 water, four pistol shots were fired the sign of a safe 

 landing. The life-line was then set free and the signal 

 given to haul up, so that the second man might be sent 

 down. 



Now followed a somewhat tedious period of waiting, 

 sitting in semi-darkness with clothes saturated with 

 water and a temperature of about 40 Fahrenheit. It 

 was possible, however, to keep up the circulation by 

 running to and fro over the floor of the cavern, which 

 was covered, for the most part, by sand, while still 

 keeping an eye on the ladder for the arrival of the second 

 man. 



At length, after about half an hour, the end of the 

 ladder began to swing from side to side and gradually 

 to come nearer and nearer to the floor, and then a figure 

 could be seen slowly descending through the spray. 

 He had a large pack upon his back, and the weight of 

 this added to his oVtfi brought the ladder well within 

 reach, and before he alighted care was taken to secure 

 it strongly to a large boulder, which was lying in the 

 pool. 



Safely landed, the pack was opened, and found to 

 contain two suits of dry clothing carefully wrapped in 

 the waterproof covering in which we were wont to carry 

 our sleeping bags. Having effected our change of 

 clothing, we were now in a position to explore the 

 cavern in which we found ourselves. 



This was a large chamber over 100 feet in 

 height and some 400 in length by 80 feet in width. 

 The roof, so far as we could see, was composed of 



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