Sometimes the oldest inventions are the best! Yes, archaeologists have uncovered some fascinating artefacts over the centuries, but some of these incredible items only invite more questions, leaving scientists desperately searching for the answers! These mysterious discoveries suggest that our ancient ancestors were more advanced than we originally thought - and were capable of creating astonishing objects that we still can’t figure out to this day! From the world’s first computer discovered under the sea on an ancient shipwreck, to the 2,000 year old battery pack buried beneath the ground, these are the 15 old technologies scientists still can't explain. Enjoy!