Carnival involve disguises and a jovial time. Montresor uses this opportunity to disguise is cruel intentions towards Fortunato.
Fortunato's jester outfit, he's taken as a nincompoop and was lured to his death by Montresor.
Montresor entices Fortunato to go with him at his house to look at the wine.
"Nemo me impune lacessit" means No-one injures me and gets away with it. The serpent represents Fortunato and the foot stamping down on the serpent is Montresor's revenge.
Nemo me impune lacessit
The Catacombs underground vault, a necropolis.
The trowel, Montresor will be a mason and will entombed Fortunato alive.
