por Jessie Berg 9 anos atrás
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por Lucas Bormann
por Diana Cecilia Marquez Morales
por ALEX AGINAGALDE
por Malik Ben Mansour
2.3 million blocks of rock weighing 5.9 million tons
Pyramid of Khufu
for some 100,000 workers labored over 20 years
ancient Egyptian kings
also known as
Pharaohs
Step Pyramid