What stands against the western wall of the last chamber? What might this foreshadow?

Against the western wall of the last chamber stands a gigantic clock of ebony, which makes a really clear, loud and deep sound that made everyone stop what they were doing (musicians were playing and people were dancing) and made everyone disconcert. This might foreshadow what happens next in the story: the arrival of the Red Death.

Explanation:

In this exercise, you have to read the short story "The masque of the red death" written by Edgar Allan Poe and then answer the questions. This short story is about a Prince that builds a wall of iron to get his people safe from the Red Death that was devastating the country but when everyone is in the mask's party they realize the Red Death is there too.