There are many stories about secret, hidden (family) possessions that were buried or hidden during years of war. Many of these possessions were not found because people never returned home, they took the secret with them to their grave.
But luckily there are exceptions! Like the story of Rudi Schlattner. He returned to his parental home years after World War II to look for family property his father once hid just before they had to evacuate the country. His father (who had died) had taught him a special way to find the hidden objects.
Seven decades after he last saw them, it was hard to trace where it was hidden. His father had told him to look for a piece of string. Once in his parental home, he looked for the little string that hung on one of the wooden panels. After a long search he saw the string and pulled it, he could hardly believe what happened then! You can see it on the next page.