What are the strangest things found in America?

Mysterious monoliths keep popping up on hiking trails in America , and even around the world, and there doesnât seem to be an overarching explanation that accounts for these strange steel-like structures.

Death Valley , California , is known for its dry, arid, and perhaps even deadly climate, but thereâs one phenomenon that remains completely unexplained.

Only a minority of people in the town of Taos , New Mexico , can allegedly hear a faint hum in the air.

Mysterious âcog stones in Orange County , California have puzzled scientists for more than 70 years .

Theories are abounding about what they were used for, and each explanation is as disparate from the other as it could possibly be.

Some 5,000 birds in Beebe , Arkansas suddenly went berserk on New Year's Eve in 2010 , panic-flying into buildings and vehicles and even into the ground.

The lights appear and disappear at random and glow in different colors, sometimes red, white, or yellow.

Skeptics believe they have a logical explanation, pointing to far-off headlights as the real explanation.

Some locals believe the lights are created by the ghost of a railroad brakeman killed in a train crash holding a lantern up as a warning.

Others allege cryptids, perhaps will-oâ-the-wisps, are said to stalk and haunt children.