The Great Pyramid Construction Theories

It remains a huge mystery as to how they transported 2 million stone blocks. How they managed to stack them perfectly is even more of a puzzle. Each block weighs about 2.5 tons on average, and the great pyramid itself is estimated to weigh 6.5 million tons. The Egyptians were way ahead ahead of their time, the construction is testament to that. Tunnels were discovered beneath the Giza pyramids and this shows that the Egyptians had mastered this building technology way before we rediscovered it. Without the help of machinery, and even before the invention of the wheel, they achieved as much as modern man is able to today.