A man has died and a woman is in hospital with severe injuries after a horror accident at a zipline park in Queensland's Far North Daintree Forest.
Paramedics were called to Jungle Surfing Canopy, at about 2pm on Tuesday after the couple fell from a 16-metre height following the sudden snap of their zipline cable 7 NEWS reports.
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The 53-year-old man from South Australia died at the scene.
His partner, a woman believed to be in her 40s was taken to Cairns hospital with suspected spine and shoulder injuries.
American couple Samantha Salyer and Joseph Maghe who had gone before the couple described to 7 NEWS their horror as they witnessed the couple fall.
"We got to the fifth platform and there were two couples behind us. There was a loud noise, we turned around, one of the lines had snapped and we saw them fall," they told 7NEWS.
"It shook the entire tree we were on. They hung there, then they both came down at the same time."
Speaking to media at the scene, Far North Police Inspector Rhys Newton described the incident as a 'tragedy'.
"This is a tragic incident and one that, once we know the full circumstances, we hope we can help to ensure never happens again," he said.
"We are providing support to the family and other witnesses involved."