For almost as long as we've had civilization, we've lost it. There are records going back hundreds of years of explorers discovering huge temples encrusted with jungle, or giant pits full of treasure that were once grand palaces. Why did people abandon these once-thriving cities, agricultural centers, and trade routes? Often, the answer is unknown. Here are ten great civilizations whose demise remains a mystery.
11 Most Mysterious Things That Should Not ExistHere are some artifacts that will leave you with questions like the sculptures portraying dinosaurs w/ humans only 4500 years ago. What do you think?and check this out.. ... 
10 Disturbing Alien AbductionsAre we alone in the Universe? These people certainly believe that we aren’t. Alltime 10s brings you 10 of the creepiest, spine-chilling tales of alien abduction. What do ... 
5 Incredibly Strange & Mysterious Videos That Need Some ExplainingFrom unexplained CCTV footage of an unsolved disappearance, to a video, posted that is supposed to reveal something deep in tunnels of the great pyramids of Giza... What ... 
5 Clues Advanced Civilizations Existed Millions of Years AgoAccording to most scientists modern humans have only been around for 200,000 years. But what if that was not the case, what if people have been around for much longer an ... 
Decoding the Antikythera Mechanism The 2000 Year-Old ComputerMore than 21 centuries ago, a mechanism of fabulous ingenuity was created in Greece, a device capable of indicating exactly how the sky would look for decade. What do yo ... 
6 Ancient Inventions You Probably Think Are ModernThere are things in the world that you would for sure think was just invented but actually has been created thousands of years ago so here are some modern inventions tha ... 
7 Mysterious Underwater CitiesFrom mysterious building found at the bottom of a lake left for centuries to cities which were only previously thought to exist in the realms of fantasy to a...Russian A ... 
15 Myths & Facts About Ancient EgyptFrom alien theories to the rights of Egyptian women, here are 15 of the most surprising and myth-breaking facts about Ancient Egypt only discovered these last few decade ... 
10 Ancient Sites That Might Be Stargates, Portals, Or WormholesMany ancient cultures speak of portals to other worlds and gateways to star systems where their “creators” reside. Conventional wisdom tells us these tales are merely my ... 
UFO Seen By Military Base - BreakdownThis is an image of a supposed UFO taken near a military base. Could it be the real deal? Phil Poling of Parabreakdown takes a look at this footage and gives us his thou ... 
8 BIGGEST Mysteries of the Pyramids You've Never Heard Of8 BIGGEST Little-Known Unsolved Mysteries of the Pyramids...you'll be quite surprised at what you find. ... 
Graham Hancock Discusses Ancient CivilizationsGraham Hancock is an English author and journalist, well known for books such as "Fingerprints Of The Gods" & his new book "Magicians of the Gods" is available now. ... 
Alien Moon Bases And Ancient Alien TheoriesAfter a stint of talking Bigfoot hoaxes, Chris and the fellas talk about Aliens on the moon, Ancient Aliens and the like. They also discuss a fleet of UFOs containing ta ... 
5 U.F.O Sightings Released By The Military!Here are five UFO sightings released by the military brought to you by Top 5 Unknowns on YouTube. What do you think?and check this out. THIS WEBCAST IS UNCENSORED. ... 
7 Mysterious Objects We Still Don't UnderstandFrom strange dodechahedrons to ancient machinery to pipes that just...should not be there...these are the 7 Most Mysterious and Ancient Objects We STILL Don't understand ... 
