Life below the limestone
The limestone labyrinth has yet to (9) ________ up its secrets and still evokes awe and inspiration in the experienced cavers who dream that one day they will set (10) ________ on its remote lower floor. The reality, of course, is quite different; even with the (11) ________ modern twenty-first-century equipment (12) ________ science can provide, and the strongest teams in the region, a complete journey through caves would impose quite terrible hardship (13) ________ the unfortunate expedition members who were chosen to undertake the first crossing. The main problem wouldn’t necessarily be the time scale – (14) ________ only a very dedicated and determined crew would be prepared to endure a mission that is (15) ________ to take more than six months and, moreover, be (16) ________ of surviving it! No, the main problem would be acclimatising to the living conditions inside the underground camp.