The dwellings were then left to abandonment, and although the most reasonable reason is that the residents returned to their nomadic lifestyles, it still hasn't been explained why they would leave their permanent homes.
See also: Captivating and creepy facts about the Middle Ages
Off the coast of Scotland, the Flannan Isles (also called the Seven Hunters) are home to a peculiar lighthouse.
In 1900, when a ship's crew noticed the light wasn't working, they set out to investigate. The three lighthouse keepers had disappeared, and no trace of them was ever found.
It has been the site of multiple disappearances over the years, with both ships and boats going missing. Their wreckage are never found. In 1918, the USS Cyclops vanished there, with 309 crewmen aboard.
Several places around the world are home to continuous and suspicious disappearances. Many people have vanished from the following sites without apparent explanation, leaving no trace behind.
Click through this gallery to see the places people mysteriously keep disappearing from.
Mysterious places people keep disappearing from
You might want to avoid these locations
TRAVEL Mysterious deaths
Several places around the world are home to continuous and suspicious disappearances. Many people have vanished from the following sites without apparent explanation, leaving no trace behind.
Click through this gallery to see the places people mysteriously keep disappearing from.