What was the descending passage in a pyramid?

The descending passage is a corridor found in some Egyptian pyramids, particularly the Great Pyramid of Giza. It descends from the pyramid's entrance to a lower chamber and was designed to provide access to the burial chamber. This passage is often characterized by its narrow, sloping structure and was used during the construction and for the burial rituals of the pharaohs. Its purpose was also to deter potential tomb robbers by complicating access to the burial site.