Beginning of Essay
was built during the reign of Khufu, 2nd king of the fourth dynasty (2,720-2,560 BC). It stands on the Giza plateau nearby Cairo and is the biggest pyramid in the world. It measures 230 m (756 ft) on each side of its base and originally measured 147 m (482 ft) h ....

Middle of Essay
.... a 35 meters long horizontal passage that leads to the so called 'Queen's chamber'. This chamber measures 5.2 by 5.7 meters and the maximum height of its pointed roof is about 15 meters. The north and south walls each have a small hole a few centimeters square about 1 meter from the floor. These lead into narrow channels that originally opened on the exterior of the pyramid. At the juncture of the ascending and horizontal passage is an opening of a shaft which descends to a depth of 60 meters. It opens into the lower part of the descending passage, close to the unfinished, underground chamber, and is believed to have been an escape shaft for the wor ....