Auzou Book les aventures de léa et gaspard - the treasure of the black country

Today, Léa and Gaspard's class are off on an excursion to Bois du Cazier, an old colliery near Charleroi. Mattéo's grandfather, one of their classmates, once worked there as a miner. But in 1956, there was a major disaster... This place, full of memories and emotions, also conceals an unexpected treasure. And of course, Léa sets off in search of it...