CHASSE AU TRÉSOR AU FOUR À CHAUX

Julie and Léo are the great-grandchildren of Louis Gondrain, who worked as a stoker at the lime kiln
in La Tour sur Orb.
One summer day, while vacationing at the family home, they discover a trunk in the attic,
a letter in a yellowed envelope. They learn that their grandfather has hidden a treasure that will be theirs if they can solve a number of riddles