World's Most Mysterious Extraterrestrial Incidents | Top 10 Mysteries | Free Documentary

Free Documentary is dedicated to bringing high-class documentaries to you on YouTube for free. With the latest camera equipment used by well-known filmmakers working for famous production studios. You will see fascinating shots from the deep seas and up in the air, capturing great stories and pictures of everything our beautiful and interesting planet has to offer.

Enjoy stories about nature, wildlife, culture, people, history, and more to come.