A 2.3-metre male saltwater crocodile has been captured "just below" the Edith Falls plunge pool in Nitmiluk National Park.
Park rangers were alerted to the presence of a crocodile in the area after finding that a recently-laid trap had been tripped.
Wildlife officers were then called to assist in capturing the crocodile to transport it out of the popular swimming area, which is currently shut due to COVID-19 restrictions.
"That's a croc big enough to inflict serious damage on a person," Nitmiluk Chief District Ranger Phil Cowan said.
"Given his size and the fact he's a male, he's probably left another area already controlled by a larger crocodile in search of his own bit of territory.
"It is unusual to get a salty in here, the last time was back in 2017 when we pulled one out that was over three metres," he said.
Mr Cowan said most areas are closed over the wet-season as crocodiles will travel undetected in the high waters, but exhaustive checks are conducted before the area reopens for the dry-season.
"The trap was only just put in, it's the end of the wet-season so we've just started doing our checks," he said.
"We have an intensive program at Edith Falls utilising floats and traps, as well as ten nights of spotlighting and a physical barrier at the Edith Falls footbridge.
"Regardless of COVID-19 restrictions, we will have the gorge and river system ready to be opened as usual if and when those measures are lifted," he said.
Even with the exhaustive measures pursued by Park authorities, a Northern Territory Parks and Wildlife statement reminded people that crocodiles are both stealthy and lethal.
"This is a reminder to obey all closures - crocodiles are on the move, they are deadly and can move around undetected," an NT Parks and Wildlife spokesman said.
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