10 Most Plausible Pyramid Construction Theories

(via Listverse) One of the most baffling mysteries in history has been trying to explain the incredible feat of engineering that are the Great Pyramids of Egypt. For thousands of years, historians, architects, and scientists have tried to come up with explanations for these constructions. No one truly knows just how it was done. Listverse examines the top 10 most plausible construction theories of the Great Pyramids.