Didn't take long for another post that could have been avoided.
Stay with your car. these ppl didn't and unfortunately one has loss his life.
Please make sure you know what your doing when outback, it's can be a brutal place.
my thoughts go out to all involved.
plenty of water an Epirb and a VHF or satallite Phone even a UHF my help,
THIS WAS avoidable , IMO just poor planning, lets make it the last.