When we think of the underground, we tend to think about dirt, fossils, gold, and even oil. Yet, there is so much more beneath our feet than what Mother Earth provides. Since the dawn of man, humans have been leaving some of the most bizarre things underground for centuries, only for them to be discovered by archaeologists later on. However, if you think that the modern man has stopped putting stuff in the ground, think again. Given that there are still uncharted areas that have yet to be discovered, this gives lots of time for strange objects to chill in the ground and then confuse us all once they make the news. Man has also populated to the point where we might have to one day go underground in order to better organize commuting and living spaces. Check out this video to learn about the 10 strangest discoveries ever made underground!