Over the years, many mysterious "crystal skulls" have surfaced but many have been proven to be fakes. There are however, a few skulls that truly are mysterious wonders. The most famous of these is the legendary Mitchell-Hedges skull, named after the British archaeologist F. Albert Mitchell-Hedges. Its origin is believed to be in Central America.The incredible thing about the Mitchell-Hedges skull is its craftsmanship. Much like the Great Pyramids of Egypt, it is impossible that it was crafted by the people of its time.
One of the most impressive things found in this period was the Astrolabe of Antikithyra. Some sponge collectors found it in 1901 near the Antikithyra island. In the Greek research centre 'Demokritos' professor Derek de Solla Piere (from Yale university) and Har. Karakalos examined it with X-rays and found an amazingly complex construction. It is the most complex mechanical construction until 1200 A.D.!
Who said that the robots, the automatic doors and the locomotive are technological advances of the second millennium? Definitely not! The pieces of information that keep surfacing prove what has been, for some decades, common knowledge among researchers: in Ancient Greece, people like Daedalus and Gods like Hephaestus developed techniques and operated inventions that a lot of inventors of our days would have been proud of.