Their light playing over the wet flowstone walls. Like pilgrims in a fable swallowed up and lost among the inward parts of some granitic beast.
手里的灯光在山洞的流石墙壁上摇曳闪动，仿佛他们是一对迷失在花岗岩怪兽腹中的朝圣者。
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A giant cave column swagged in flowstone towers over explorers swimming through the depths of Hang Ken, one of 20 new caves discovered last year in Vietnam.
The trickiest challenge for the expedition team was to find a way over the Great Wall of Vietnam, an overhanging mass of flowstone that blocked the way deep inside Hang Son Doong.