Horrified tourists looked on as he flew through the air before landing in a small pool at the bottom.
Yet amazingly the youngster was plucked almost unscathed from the water by a passer-by.
The boy’s aunt, who tried to grab him as he fell, was also lucky to be alive after she plummeted 25ft onto a tree.
She was helped to safety by a climber.
The pair, who have not been named, are thought to have been visiting from Liverpool.
Phil Facey, who owns the nearby Pistyll Rhaeadr Restaurant and Tearooms, said: “I honestly believe something special happened on Sunday.
“It was a miracle they both survived. They both should have died.”
He said the boy and his aunt had walked up the left side of the falls where there is no footpath.
“The waterfall is 240ft,” he said.
“On the left- hand side is a very nasty scree slope, with no footpath.
“Don’t ask me why but the aunt, who’s about 35, and her nephew decided to climb it.
“They got half way up to a ledge. The young lad flew through the air straight into the waterfall.
“It’s rock all the way down but he didn’t hit the sides – just straight into the pool which is two feet deep.
“As he fell his aunt went to grab him and fell as well.
“I heard screams and went outside. I saw a man bringing the boy out of the water.
“There was silence. People were holding their arms out trying to touch this lad. It was quite beautiful and strange.
“I thought ‘this lad should be dead – his aunt should be dead’.
“Things don’t happen that way – two people falling, both having a miraculous escape.
“They came into the cafe and the boy was checked over by medics, but he was fine apart from a scratch on his face. It was incredible.”
Mr Facey said they recovered in the tearooms until a relative picked them up.
He added: “There is definitely something here.
“It feels like a place of power, with a spiritual side.
“It’s said the falls are the closest you will get to knowing what’s on the other side.”
Source : EXPRESS