A 50-year-old man died and a woman was seriously injured in Australia on Tuesday when they plummeted about 50 feet during a zip line tour.

The pair from South Australia were harnessed together when they suddenly fell around 2 p.m. during a tour of the Daintree Rainforest in Queensland, authorities said.

“There was a loud noise, we turned around, one of the lines had snapped and we saw them fall. It shook the entire tree we were on,” American tourist and fellow zip liner Samantha Salyer told 7 News.

Another American tourist, Joseph Maghe, added: “They hung there, then they both came down at the same time.”

“[The woman] was screaming [the man’s] name and there was no response and that was probably the worst part for me,” Maghe said.

A rescue helicopter flew the 48-year-old woman to the hospital at around 5:30 p.m., with serious injuries to her pelvis, shoulder and one of her arms.

The man was pronounced dead at the scene.

It wasn’t immediately clear what caused the incident on the attraction run by Jungle Surfing Canopy Tours.

Phoebe Kitto, a director of Jungle Surfing, offered her sympathies to the families and friends of those affected by the accident.

“It will be thoroughly investigated by Workplace Health & Safety, which will receive our full cooperation,” she said.

With Post wires