A found camera revealed the mysterious final moments of two girls who vanished in a jungle.
Kris Kremers, 21, and Lisanne Froon, 22, were going for a walk through the forests around the Baru volcano in Boquete, Panama when they disappeared in 2014.
They had spent six months planning the trip and had been hiking around the jungle for two weeks before they went missing, having waved goodbye to a host family they were staying with on April 1.
More than two months later, two bodies in strange conditions were found.
In the eight years since they went missing numerous theories have emerged about what fate befell them.
Dick Steffens, a former detective from their home city of Amsterdam, speculated that Kris could still be alive today, having been kidnapped by a sex trafficker.
The ex-cop argued that the investigation into their disappearance had been botched by Panama police.
Others have suggested that that the pair died in an accident, while several failed attempts to access Kris' phone have led some to believe she died, leaving Lisanne to try and get help.
The alarm was initially raised about the disappearance of the girls after they missed a private walking tour of Boquete on April 2.
A wide reaching search of the jungle and nearby villages failed to find the women, leading their parents and Dutch detectives to fly out on April 6.
Ten days later - with no clear leads having been found and the investigation soon to wind up - a local woman handed in a blue backpack.
She said that she found it in a rice paddy along the banks of the river.
The bag contained two pairs of sunglasses, a small amount of cash, two bras, a water bottle and Lisanne's passport, Tebigreek reported.
Also in the rucksack was Lisanne's camera, which contained 90 photos which had been taken in the jungle on April 8 between 1am and 4am.
Only a few of the pictures retrieved from the memory card showed clear images, with most capturing near-complete darkness.
Some of the images show the pairs' belongings spread out on some rocks next to a plastic bag and sweets wrappers.
Mounds of dirt and a mirror were also captured in the shots.
Another of the images seemed to show the back of Kris' head, with what some have suggested is blood coming out of her temple.
The identity of the person who took the images, and why they were taken, remains a mystery.
The contents of the backpack also contained other clues about what may have been Kris and Lisanne's final moments.
Their call-logs showed how they had desperately tried to call the police.
Over the course of four days 77 ring attempts were made, but only one connected - and for just two seconds due to bad reception.
Both of their phones finally ran out of battery by April 11, ten days after they disappeared.
Police searched the area where the bag was found and discovered Kris' clothes folded neatly along a river nearby.
Two months later, a pelvic bone and a foot - still inside a boot - were found in the same area, La Estrella de Panama reported.
The bodies of what most people accept belonged to the two women were found a short while later.
While Lisanne's body had seemingly decomposed naturally, Kris' bones were stark white, as if they had been bleached.
Their causes of death have never been determined.
Dutch authors Marja West and Jürgen Snoeren believe that they have solved the mystery in their book Lost in The Jungle.
They argue that the deaths were an accident, caused by flash flooding that is common to the area at that time of the year.
The authors told The Daily Beast : "It actually came as a surprise to us too, but our conclusion had to be that it was an accident.
"It took us quite some time to get there."
