The video discusses three unexplained mysteries:
1. The "Dance Epidemic of 1518" in France, where a woman began dancing uncontrollably in the street, and soon, 400 others joined her. The cause of this phenomenon remains unknown.
2. The "Infinite Hole" in Washington, reportedly discovered by a man named Mel Waters in 1997. According to him, the hole was incredibly deep, had supernatural powers, and could resurrect animals. However, the existence of the hole and Mel Waters himself are disputed.
3. The poisoning of the cast and crew of the film "Titanic" during filming, which caused widespread hallucinations and chaos. Despite investigations, the person responsible was never found.
Additionally, there are brief mentions of other unexplained events, including the disappearance of the Roanoke colony and the Dyatlov Pass incident, where nine skiers died under mysterious circumstances.
Here are the key facts extracted from the text:
1. In 1518, a woman in France named Fran Truf started dancing uncontrollably in the middle of the street.
2. The woman danced for six days without stopping, and her behavior was initially thought to be a performance.
3. As the woman continued to dance, more people gathered around her, and the dancing eventually spread to others.
4. Within a month, about 400 people in the city were dancing non-stop, including some who eventually died from exhaustion.
5. The phenomenon became known as the "dance epidemic of 1518."
6. Despite several historians confirming the event, the cause of the dance epidemic remains unknown.
7. In 1997, a man named Mel Waters reported finding a strange hole on his property in Washington that was allegedly 24,000 meters deep.
8. According to Mel Waters, the hole had supernatural powers, including the ability to resurrect animals.
9. However, the hole was never found, and Mel Waters' story remains unverified.
10. In 2008, a man named Red claimed to have found the same hole and said it had the power to set ice on fire.
11. The crew of the film Titanic was poisoned in 1997, resulting in hallucinations and bizarre behavior.
12. The poisoning was caused by PCP, which was placed in the crew's food.
13. The person responsible for the poisoning was never found.
14. The colony of Roanoke, established by the English in the 16th century, mysteriously disappeared.
15. The only clue left behind was the word "CROATOAN" carved into a tree.
16. Historians and archaeologists are still trying to determine what happened to the 115 people who lived in the colony.
17. In 1959, nine students and skiers on an expedition in the Soviet Union mysteriously died.
18. The bodies were found with strange injuries, including one without a tongue and another without eyes.
19. The investigation concluded that the group was killed by an unidentified force.
20. Theories about the cause of the deaths include an attack by indigenous people, an avalanche, and a yeti.