Off. and that's what they have been carrying on doing over the years, and building up their experience. not only in caves in the uk, but all over the world. they've done some pretty incredible dives. and all of this has nothing to do with cave rescue. this has to do with cave exploration. but, of course, the skills they have picked up doing this and in pushing the extremes of underwater, underground exploration, they have built up incredible skills and amounts of experience, and in designing some of their own equipment so that when there is an occasion for a rescue situation, they're the best ...