There are countless theories that speculate alien influence on ancient structures. Which structure, pictured here, is often the center of those rumors?

The sheer size and weight of the stones used to create Stonehenge have led some to believe that humans could not have built it with the technology available at the time. Aliens are generally the go-to explanation in these cases.

Asked by Christina Loprieno · Last updated 5 years ago · 6.1K views · SOURCE