The youngsters had just completed one of the most popular adventure tourism activities at the Datanla falls near Dalat – sliding down the water flows in a life-jacket and crash-helmet.
But the guide said that the “male tourist” then walked towards a whirlpool known locally as danger spot, with the women just behind him.
“Then the man walked back to the women behind him, but he slipped into the whirlpool and was immediately swept away, down to the waterfall.” Mr Sy said that he jumped in to the stream and shouted to the women to stand up and try to withstand the water flow.
There were also initial reports that the accident occurred during a zip-lining trip, but later accounts seemed to discount that version.
According to Mr Sy’s account, they were wearing safety gear and had completed the guided part of the trip down the falls.