When The two finally got to the catacomb, Fortunato, ready to taste the Amontillado, went in. Montresor then chain Fortunato to the wall in the dark room and after Fortunato passed out, Montresor started building a brick wall to seal off the doorway.
After Montresor put some layers of bricks, Montresor hear Fortunato, so he took a break. Then after Fortunato stopped, Montresor continue. Before Montresor put the last brick in, Fortunato wakes ups and realizes that he has been trick.
Fortunato went silent and all Montresor hear from him was bells. Montresor feels sick at his heart, but blames it on the moisture in the catacomb. Montresor before leaving, puts bones on "the new masonry". Fortunato's hasn't been messed with his tomb for half a century.