The pyramids are aligned to true north and each one is set back from the preceding monument to provide a clear view of the northern stars to maintain accurate alignment. ... On the average the limestone blocks used in the pyramid weighs 2.5 tons. In addition, granite blocks that were used to line the burial chambers were brought from Aswan, 580 miles to the south. ... Each block was cut to shape after it had been moved to its final position so that it fitted exactly. ... Visitors no longer can pose for a picture atop the giant stone blocks at the base of the pyramids. ...

• Word Count: 1566
• Approx Pages: 6
• Grade Level: Undergraduate