There are certain things which have happened in Earth’s past that leave scientists scratching their collective heads. Some have been large structures carved from solid stone, stonewalls carved into shapes resembling a puzzle and the Nazca Lines of Peru are but a few examples. For those unfamiliar, the Nazca Lines are extremely large drawings carved into the earth which can only be witnessed properly from an aerial vantage point which humans were not capable of at that time in history. Many of the lines resemble creatures which reside on earth while others appear to be a sort of landing strip, or runway. It has long been speculated that extraterrestrial beings created these lines and you can learn more in the short video below.