[4] Note: The Trou du Diable cave is only accessible by guided tours offered by the Portneuf Regional Natural Park.

[3] The Trou du Diable is the second largest cave in Quebec, with a little over a kilometer of underground galleries, it's located east of the village of Saint-Casimir.

[1] We notice: — the presence of a network of dry galleries, the most typical of which is the pot gallery with beautiful forms of vortex erosion — the vast dimensions of certain parts of the cave — the arrival of underground tributaries joining the main channel — the mediocrity of concretions, which testifies to the importance of dissolution actions[7][1][8] Caves are often associated with legends and superstitions of all kinds, dragons, sorcerers and devils like the Quebec caves called fairy hole, devil's hole or bottomless hole.

When New France was discovered, people thought they had found a virgin continent, an earthly paradise, a place where malevolent minds had not set foot.

... Rather, the Devil had taken refuge on this land, enjoying a place where he could take some time off, telling himself that the most prosecuted entity of this world certainly deserved this perfect sanctuary.