How does setting contribute to the overall mood of "The Cask of Amontillado?" Use details from the text to support your answer.

For English-speaking readers, especially of the early nineteenth century, the setting of a story in Italy or other Mediterranean countries often conveyed a sense of mystery and deep romanticism. Poe places his tale not only in Italy, but also during Carnival time, which adds an element of wildness and abandon. The costumes of the revelers, such as Fortunato's "tight-fitting dress" with "conical cap and bells," depict something not only amusing but also grotesque, as with the characters in Poe's "The Masque of the Red Death." It's as if both the narrator and Fortunato have become slightly monstrous in their disguises.
An even more significant element of the setting may be the underground vault—the catacombs in which the bones of the dead are visible. Underground chambers are a recurring theme in Poe's works and always have the implication of horror and murder. "The Pit and the Pendulum" takes place in such a chamber during the Inquisition, and in "The Black Cat," the narrator says he is walling up his wife's body in the cellar of their home as the monks of the Middle Ages did with those of their victims.
A last detail is that Fortunato is so drunk that he at first does not seem to understand he is being entombed alive, and he asks naively if there is fun to be had back at the palazzo. Then we have the sudden shock of his crying, "For the love of God, Montresor!" One might ask if the disconnect in tone between Fortunato's statements adds to the horror or, on the contrary, defuses it in some way, making the whole tale into a mystifying and unreal dream.