Detectives are continuing the search for a woman who vanished near a north Queensland swimming hole.

Authorities are scouring dense rainforest for a woman who vanished near a north Queensland swimming hole.

Mother-of-three Shannon Leah Fraser, 30, was visiting Golden Hole, south of Cairns, with her partner and a friend when she went missing on Sunday.

Ms Fraser’s partner told police he walked off and left her sitting alone in a gazebo near the river, and she was gone when he returned about five to 10 minutes later.

About 25 people, including officers on quad bikes, were scouring around Golden Hole on Tuesday. A dive team and helicopter searched the area on Monday but found nothing.

Inspector Rhys Newton said there was no evidence to suggest foul play but police were keeping an open mind.

“We haven’t got anything at this point that would be pointing us in that direction,” he told media in Cairns on Tuesday.

“There’s a number of theories about her moving away from that position into the area around that creek and also in the jungle area.

“It’s a very difficult area (to search), with rocky boulders and thick jungle. It’s a painstaking process.”

Ms Fraser’s partner and friend said the trio had not fought before her disappearance and Ms Fraser did not suffer from a medical condition.

A helicopter will again join the search on Wednesday.

Ms Fraser is described as Caucasian, 175cm tall, with a heavy build and dark brown hair.