Another thing I find puzzling is that why would experienced hikers take only one water bladder for the entire family. Like I stated before more questions than answers. Yes it is ambiguous that we don't know what they carried with them. However, if they had for example small boxed juice drinks or energy drinks that would say that perhaps they intended to hike some ways. But, one water bladder doesn't make sense to me unless they only intended to be hiking a short distance or at a slow pace. They would also want to keep it light even if they intended a short hike. So I can't see them taking the juices if it was short and sweet. Maybe if they were distributed between them. But even then the amount of juice drinks plus one water bladder wouldn't be enough for a longer hike. MOO.