Krubera is the deepest known cave in the world A Ukrainian team has set a new depth record for caving.The nine-strong group travelled 2,080m (6,822ft) underground, passing the elusive 2,000m mark at Krubera, the world's deepest known cave. The team was part of a project that has made breaking through 2,000m its goal for the past four years. It built on records set by a previous expedition, which blasted through blocked passages in the cave, within Georgia's breakaway region of Abkhazia. "Even now, we don't know whether we've reached the limit - or if it will go on. We're pretty...