Examples from Cask of Amontillado by Edgar Allan Poe that show how it's Gothic literature. (intense emotion, supernatural, multiple plots, setting, unusual language, cheerless character, mystery surprise terror ex.)

The imagerys can be seen in the lines:

Plum-sweet they swell;

their thin skins hold moist red earth.

Explanation:

Imagery is the figure of speech used when the author wants to describe objects, situations and actions in a way that stimulates the reader's five senses, allowing him to hear, see and feel the characteristics of the description. We can see an example of imagery in the lines above, as the author describes features in which the reader knows the sensation and can feel it again when reading the lines.