A family believe the creepy image in this photo is the ghost of a girl who drowned in the same swimming spot 100 years ago.
The spooky photo was taken by Kim Davison in 2014 and shows four children and two adults playing in Murphy's Hole, Helidon, Queensland, Australia.
However, the fourth child at the back of the group is thought to be the ghost of a 13-year-old who died in that exact spot in 1915.
The face that can be seen appears to be very white with dark eyes and two shapes on either side of its head.
Kim posted the photo to Facebook and said: "At the time of taking this photo there was nothing between us.
"I'm holding the little girl and that white head next to me with horns is not human, I can promise you that.
"Its fingers are on my shoulder and on my daughter's arm. They are long skeletal type fingers."
Jessie Lu, in the white sunglasses, commented underneath: "There was only three children there on that day. Two adults in the water and two adults on the bank.
"One was taking the photo by her phone camera. We have had two IT specialists look at this photo. At the time of taking this photo there was nothing between us.
"The older girl had trouble in the water on two occasions that day. And if u have a closer look at this photo there are quite a few extra faces in the water."
A fellow user posted a link to an old newspaper cutting which reports the death of Doreen O'Sullivan.
It warns that Murphy's Hole is 'considered dangerous'.
The Brisbane Courier newspaper clipping from November 22 1913 has a death notice for a little girl who died in that watering hole.
It reads: "Doreen O Sullivan, aged 13 years, eldest daughter of Mr. James O'Sullivan was accidentally drowned whilst bathing in the Lockyer Creek on Friday afternoon.
"Nearly an hour elapsed, before the body was recovered. The spot, which has always been considered dangerous, is known as Murphy's Hole, and is over 20 foot deep.
"The funeral took place on Saturday afternoon and was largely attended. The convent school children dressed in white, marching next to the hearse."
Kim said that there had been strange occurrences that day as they swam in the water, which only firms her belief that a spirit was present.
She said: "On this day my daughter had her leg grabbed two times by something in the water.
"When I went back in for one last dip to cool off I did feel something behind me as I was walking out of water but tried to ignore it."
She claims that two paranormal experts looked at the photograph and after extensive investigation came to the conclusion that the shape in the image is a child who drowned in the river in 1915.
But one commenter, Brad Glynn, had another explanation: "I think it is another kid just the sun is over exposed more on the face as they are facing the sun."
The 'Toowoomba Ghost Chasers' Facebook page administrators were not convinced by either explanation.
They wrote: "We used to swim there all the time growing up and all I can say is just to be safe I'm never swimming there again!"