A team of pot-holers recently went down the Gouffre Berger. Afterentering the narrow gap on the plateau, they climbed down the steep sides ofthe cave until they came to narrow corridor. They had to edge their way alongthis, sometimes wading across shallow streams, or swimming across deep pools.Suddenly they came to a waterfall which dropped into an underground lake at thebottom of the cave. They plunged into the lake, and after loading their gear onan inflatable rubber dinghy, let the current carry them to the other side. Toprotect themselves from the icy water, they had to wear special rubber suits.At the far end of the lake, they came to huge piles of rubble which had beenwashed up by the water. In this part of the cave, they could hear an insistentbooming sound which they found was caused by a small water-spout shooting downinto a pool from the roof of the cave. Squeezing through a cleft in the rocks,the pot-holers arrived at an enormous cavern, the size of a huge concert hall.After switching on powerful arc lights, they saw great stalagmites -- some ofthem over forty feet high -- rising up like tree-trunks to meet the stalactitessuspended from the roof. Round about, piles of limestone glistened in all thecolours of the rainbow. In the eerie silence of thecavern, the only sound that could be heard was made by water which drippedcontinuously from the high dome above them.
洞穴勘查或洞穴勘探是一项比较新的体育活动。寻求独处的愿望或寻求意外发现的机会的欲望吸引人们来到地下深处。要想对洞穴探险者的动机作出满意的解释是不可能的。对洞穴探险者来说,洞穴有一种特殊的魅力,就像高山对登山者有特殊魅力一样。为什么洞空能引发人的那种探险本能,人们对此只能有一种模模糊糊的理解。
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