With its six-metre long crystals 这里尽是6米多长的结晶群

340. more than a mile from the surface,
     位于地表之下1英里多的地方
341. that almost defied belief.
     美得简直无法令人相信
342. The Chandelier Ballroom was the ultimate discovery.
     “灯饰大厅”是最后被发现的厅洞
343. With its six-metre long crystals
     这里尽是6米多长的结晶群
344. it's surely the most bizarre cave chamber in the world.
     它可以说是世界上最奇异的厅洞
345. And the walls had one further surprise.
     而石壁上还有更惊人的发现
346. Extremofile bacteria were found to be feeding on the rock itself.
     嗜极细菌在岩壁上自我生长

来自《行星地球 第一季 第四集 Planet Earth S01E04 洞穴》第 343 行