The Great Pyramids of Antarctica
When a group of pyramids was found perfectly formed in Antarctica using Google Earth in 2013, people were dumbfounded that there may have been ancient civilizations who built huge structures that we know nothing about on the icy continent. But geographers think that the answer to this mystery is much simpler because the group of massive pyramids may just be mountain ranges that were subject to erosion. But no one knows for sure because the site has never been closely examined.