Dreamworld in Australia turns into a tragedy

A mortal accident took place in Dreamworld, the major aquatic theme park on the Gold Coast in Queensland. (Many years ago,  my grandfather from Burleigh Heads took my children and me to see a dolphin pool in an early version of the site.)  A few hours ago, four people—two 25-year-old couples—died at Thunder River Rapids in circumstances that remain unexplained.

Here’s a recent video of the pleasant raft ride, apparently far more dangerous than what innocent people imagined:

"Attention, riders : Please keep your hands

and arms inside the boat at all times."