The Pit and The Pendulum by Edgar Allan Poe

**** The narrator then decides to cross the center of the room, moving with increasing confidence until he fortuitously trips and lands prone at the edge of a circular pit. By dropping a stone from the masonry at the edge of the pit, he discovers that the pit is very deep and filled with water at the bottom. He hears a door closing and realizes that he has narrowly escaped his death.

What is the event and the setting on the above?