Spooky Mass Disappearances That Have Never Been Solved

We've all heard of people who have seemingly vanished into thin air. D.B. Cooper, Jimmy Hoffa, Amelia Earhart. But it's especially weird when entire groups of people are just... gone. Unsolved mass disappearances are unsettling because they just shouldn't happen - it shouldn't be possible for whole colonies to vanish and leave behind no evidence of what happened to them. 

We may never know the truth about what happened to Malaysian Flight 370 or the Roanoke settlement. The best we can do is hope it never happens to us. Here are some of the spookiest mass disappearances in history.