1) <em>The damp ground of the catacombs of the Montresors: </em>this phrase describes a dark place, it makes the audience feel anxious about what is going to happen in the catacombs.
<em>2) -"I drink," he said, "to the buried that repose around us."
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<em>-"And I to your long life."</em>
This dialogue, not only makes the reader feel like a witness but also has an ironical effect, in which he/she can find it funny despite being terrifying.
3) <em>A moment more and I had fettered him to the granite:</em> it intensifies the dramatic irony present in the whole short story.
4) <em>A low moaning cry from the depth of the recess:</em> the words that Poe used to describe the desperation of Montresor makes the reader feel like the very character: confused, anxious, fearful.