that have explored systems that have never been seen before and particular case in point here in florida in the north florida area, there is an area called wacool springs. a group of divers logistically similar to this have explored some 13 plus miles underground and continue to explore this system do so with the help of a large number of volunteers that spent two and three days doing similar things to what we see here. staging equipment deeper in the cave so those who make the final push as the term that is used in this case those four navy s.e.a.l.s to make the final push to get the next group out, it is similar in operation.