New Delhi: The Great Pyramid of Egypt - Giza is the oldest of the Seven Wonders of the Ancient World, and the only one to remain largely intact. Here Egyptologists believe that the pyramid was
know some interesting facts about great pyramid of egyptImage Source : INDIATV
The mortar used is of an unknown origin. It has been analyzed and its chemical composition is known but it can't be reproduced. It is stronger than the stone and still holding up today.