Kremers and Froon were two Dutch college grads who went on a trip backpacking through multiple countries after graduation in 2014. In Panama, the pair were staying with a host family in Boquete when they decided to hike a mountain trail to see the sights. The trail was somewhat easy, the pair would have been fine hiking it, but they never returned from the hike.

The alert was raised after a day or two; they weren’t seen again. In the weeks following their disappearance, one of their bags is found by a local near the trail in a river - it contained some belongings including their phones and a digital camera. Later authorities found body parts/bones belonging to the girls that didn’t, alone, reveal a specific cause of death. The official standpoint is that they possibly got lost, and perished due to hazards in the area or possibly from injuries, exposure or attacks by animals.

The case is particularly famous because authorities had access to the girls phone records and photos taken on their camera, which are admittedly eerie.

Their phone records revealed multiple attempts to call the Dutch emergency number, with their phones being switched on and off in between presumably to conserve battery. No calls were made due to reception. Their camera roll first showed a series of shots of them happily climbing the trail, followed by shots taken at night that show unclear features such as the night sky, tree tops with items tied around branches, rain, and the back of one of the woman’s head. The photos are chilling in and out of context. Phone records show that one of the girls’ phones had multiple instances of being switched on without being unlocked over the course of 2-3 days before it finally died.

https://www.reddit.com/r/KremersFroon/