Great Wall Of Chin The Great Pyramid Of Giza

The Great Pyramid of Giza is the oldest and largest of the three pyramids in the Giza Necropolis bordering what is now El Giza, Egypt. It is the oldest of the seven wonders of the ancient world, and the only one to remain intact. Egyptologists believe that the pyramid was built over a 10-20 year time span. It was built around 2560 BC. The Great Pyramid was the tallest man-made structure in the world for over 3,800 years, until The Great Wall of China was built! The Great wall was originally covered by casing stones that formed a smooth outer surface. If you go and see The Great Pyramid today you might still see some of the original stones toward the base of the pyramid. The most accepted construction hypothesis about building the pyramid was based on the idea that it was built by moving huge stones from a quarry and dragging and lifting them into place. There are three known chambers inside the pyramid. The lowest chamber is cut
In the north and south walls of the Queens Chamber there are shafts, which unlike those in the Kings chamber that immediately slope upwards, are horizontal for around 6.6ft before sloping upwards. The shafts in the Queens chamber were explored in 1992 by the German engineer Rudolf Gantenbrink using a crawler robot he designed.
At the upper end of the Grand Gallery on the right hand side there is a hole near the roof that opens into a short tunnel by whi9ch access can be gained to the lowest of the Relieving Chambers. The other Relieving chambers were discovered in 1837-1838 by Colonel Howard and J.S. Perring who dug tunnels upwards using blasting power. The floor of the Grand Gallery consists of a shelf or step on either side. In the shelves there are 54 slots, 27 on each side matched by vertical and horizontal slots in the walls of the Gallery. The purpose of these slots are not