boys out before the rains start using converted scuba equipment through these incredibly difficult passageways leading into the cave, probably -- it's a six hour trip out for experienced divers. goodness knows what it will take to shepherd these children out after their exhausting ordeal. the contingency plan you talk about i think is an accelerated version. if the rain comes and when it comes, it's torrential and it will flood the cave system again very quickly. they have been working very hard to pump out as much water as they can. the pumps are down there. the outflow is down the hill. it's been flowing out for days now. i watched it. they have managed to get the water levels to drop a lot, which is great. but not enough to lower the water level below the roof level. there will be patches of the exit which will require actual diving. that is the hard bit for the boys.