Great Pyramids

Inside the great pyramids, the temperature is constant and equals the historic average temperature of the earth, 20 Degrees Celsius (68 Degrees Fahrenheit). The outer mantle was built using 144,000 casing stones, all highly polished and flat to an accuracy of 1/100th of an inch, about 100 inches thick, and weighing approximately 15 tons each. Now, that is weird.