In August of 1942, Marcelin and Francine Dumoulin left their home and were never seen again. Marcelin was a shoemaker and his wife, Francine was a teacher, who spent most of her adult life pregnant.
They were also farmers who tended cattle in the Swiss Alps.
It was rare that the husband and wife would set out together on the 2, 600 meter (8,530 foot) climb up the mountain and no one is sure why they chose to do so on that day.
Despite extensive search efforts, the Dumoulins were never found. Long after rescuers gave up, their children never stopped believing that one day they would find their parents.
Within two months of their parents' disappearance, the children were separated and placed with different families. Sadly, they lost contact over the years.
It would take 75 years for nature to reveal what really happened to their parents all that time ago...