16 Fascinating Discoveries That Stayed Hidden For So Long

This grave was found in Patras, Greece and dates back more than two thousand years. Incredibly, the ceramic crown of flowers still has color.

We're used to seeing fossils of dinosaur bones, but this — fossilized dinosaur skin — is a much rarer find indeed.

Beneath the tranquil waters of this river in Palau, a Japanese fighter plane from World War II can be seen just below the surface.

I've never personally found an arrowhead, but I've seen arrowheads that others have found. I think this is the most intact one I've ever seen.

Someone was going for a drive through the woods when they spotted this. I have so many questions and I don't think they'll ever be answered.

A hiker stumbled across this weird wooden structure in a cave. Turns out it was a pipeline, used for getting the water out of an old mine.

This looks like an ancient artifact with a long-dead language on it, but it isn't that old. It's just an old cattle brand.

Imagine going for a stroll on the beach and finding this: a target drone from the United States Air Force.

Finding a secret room is kind of a fantasy, and this secret room — which includes a hot tub and steam room — seems like the ultimate find.

This is the Fukang Meteorite, one of the most remarkable meteorites ever to crash to Earth's surface. It definitely looks alien.

Someone bought a disposable camera and found that it had been used once — capturing an accidental shot of the assembly line where it was manufactured.

These pennies all came in the same roll. They're all pennies, they're all the same size, but one of them is more than a century older than the rest.

This guy found something cool in the swamp: an alligator snapping turtle hibernating just underneath the sheet of ice.

This jacket, found at a thrift store, was clearly for someone who worked at the 1988 Olympics. It still had their ID badge, along with original plane tickets.

A homeowner was doing some renovations when they found a door to the outside they weren't aware of. It had been boarded up years before.

Lots of Batman fans have turned their cars into the Batmobile, but usually it's a more modern version. This person rocks the old-school Batmobile, and I'm totally here for it.