The History Channel

Does Mount Rushmore, one of America's greatest icons of Democracy have a more sinister meaning? Buddy, Mac and Scott travel to Big Sky country to decode the intended message possibly hidden within this great American symbol.

An inside look at the secret protocols, elite security and hidden history of the world's most public of private residences. What is the most secret room in the White House and what makes it so powerful? What secret visitors have been to the White House--invited or not? What kind of background checks are needed to work at the White House? What security measures go into effect if the White House is under attack? For over 200 years, the White House has functioned as a Presidential residence, Executive Office and national command center. But more guarded than the White House itself--are its secrets. Secrets that have remained untold...until now.

It is one of the most secure structures in the world. It safeguards the vast wealth of the United States... And its name is synonymous with one of the most precious commodities in the history of the world--gold. But behind this building's stone exterior are secrets. This episode unlocks the secret contents, political controversy, and cutting edge security hidden behind the gates of the world's most famous vault. How did the Unites States amass its gold? What is the precious metal really worth? Who's allowed inside the vault? What else is stashed there? Could Fort Knox actually be empty?

It is America's most private organization with secretive meetings and a membership that includes the most powerful men in America--and the world. But behind this elite brotherhood... are secrets. This episode explores the secret history, rituals and reach of the most well-known secret society in the world. How did the Freemasons shape America? What goes on at Freemason meetings? What secrets ceremonies and rituals are still conducted today? What is the meaning of Freemasonry symbols like the eye, the square and the compass? Are the Freemasons part of a New World Order with plans to control the world? For centuries, the Freemasons have been thought to be the architects behind the world's greatest international conspiracies. But more elusive than the organization itself--are its secrets. Secrets that have remained untold...until now.

Best-selling author Brad Meltzer and his team dig into one of the Civil War's most enduring legends: that millions of dollars' worth of missing gold and silver from the Confederate treasury are still buried in secret hiding places across America. According the legend, the only way to find that buried treasure is to decode cryptic signs and symbols left behind by a shadowy Confederate group known as the Knights of the Golden Circle. Brad and the Decoded team join veteran treasure hunter Bob Brewer, whose lifetime effort to understand the KGC's secret code paid off when he uncovered a small fortune in buried Confederate coins. Bob soon shows just how well he understands those codes as he and the team follow KGC clues to the location of another possible treasure trove.

Does Mount Rushmore, one of America's greatest icons of Democracy have a more sinister meaning? Buddy, Mac and Scott travel to Big Sky country to decode the intended message possibly hidden within this great American symbol.

Could a killer earthquake strike America's heartland? If history proves true, the answer is yes. The 1811-1812 New Madrid Earthquakes (centered in southeast Missouri) rank as some of North America's most catastrophic natural disasters. Stretching more than 160 miles, a system of earthquake faults lurks beneath the Mississippi River basin, loaded and ready to erupt. And it's happened before. Pioneer residents of New Madrid, Missouri were thrown from their beds in the early hours of December 16, 1811 when an estimated 8-point earthquake hit. But it wasn't just one event. Multiple shocks were experienced over the next three months--the largest caused the Mississippi to flow backwards. No earthquake sequence has lasted so long, produced so many shocks, nor created such astonishing phenomena on land and water. The New Madrid Fault remains a seismically active area and experts expect a repeat. The only question is when...

A controversial scientific theory states that gigantic eruptions of methane gas from deep in the ocean have occurred regularly throughout history. Although a global-scale methane eruption today is highly unlikely, there may be stagnant, oxygen-poor basins in the ocean where methane might accumulate. Even a small explosion could cause a catastrophe. Imagine what would happen if such an event occurred in the mid-Pacific. Tsunamis would be generated in continuous waves, striking Hawaii and the entire West Coast. Coastal areas would be flooded for miles inland. Methane/water clouds would auto-ignite and the massive fires could cause widespread destruction. Consequences could be global. Whatever humanity survives would be thrown into a Dark Age.

This island in the middle of San Francisco Bay has a forbidding reputation. Native Americans believed it to be a place of evil spirits. When it became a federal prison in 1934, only the most violent and difficult prisoners in the U.S. were sent there. It was reputed to be escape proof; only three men have ever managed to get off the island. They left in 1962 and have never been found. MysteryQuest investigates to determine whether they could have survived the icy waters of San Francisco Bay.

According the official public record, Adolf Hitler committed suicide in his underground bunker as allied troops stormed Berlin at the end of World War II. But no one actually saw him die. No body was ever produced. No photographs were ever taken. Some believe Hitler managed to escape, and for years there were sightings of the former dictator in many parts of the world. Then, in the 1990s the Russians revealed secret evidence taken from Hitler's bunker decades earlier that they said proved he had died there. Among the evidence is a piece of skull. MysteryQuest obtained access to this evidence for testing and the results are startling.

It's the most popular fish in the American diet. From the school lunch box--to the high end sushi bar--to the outdoor barbecue, tuna crosses all demographic lines. We'll go fishing with the men who risk their lives to bring in a haul, stop in at Bumble Bee, the only major tuna cannery still operating in America, and visit the world's largest fish market in Tokyo, where a single tuna can sell for as much as $100,000. We'll also explore worldwide efforts to save the giant bluefin tuna, which has been over-fished to a point of peril. Then we'll head to sea with scientists who track the tunas' inter-oceanic migrations, and travel to South Australia, where entrepreneurs seek to breed the mighty bluefin in captivity.

It's the only rock we eat, and we need it to live. History has shown that those who have salt rule the world--and today, this versatile substance has 14,000 known uses. Travel to a salt mine 1,800 feet below Lake Erie where workers blast salt from a massive deposit spanning four states, to an evaporation facility near San Francisco where machines harvest salt from the briny ocean. Visit a Florida restaurant that offers 40 different varieties of salt...and journey to New York to explore salt's surprising number one application: de-icing snowy winter roads. See how a high-tech desalination plant removes salt from ocean water, producing 25 million gallons of drinkable water every day. And if it's speed you're after, look no further than a natural drag strip in Utah made of pure salt.

Modern Marvels is going big, and counting down. We take the "best of" Modern Marvels and give you the MEGA Top 10 countdown. On this edition, the top ten guilty pleasures you just can't resist... America's Favorite Foods.

Each year in the U.S., 280 million hens lay 80 billion eggs, one of the world's most affordable sources of protein. We'll chart the "journey of the egg" from henhouse to breakfast table...from massive traditional Iowa farms, where millions of eggs move from hens to delivery trucks without being touched by human hands...to "cage-free" and "pasture raised" farms where chickens have more room to roam but consumers pay the price. Find out what labels like "Grade A, Organic" and "Omega-3 Enhanced" really mean. See how powdered eggs get made and what happens to the billions of whites and yolks that go their separate ways. Try the world's largest omelet, made from an ostrich egg, the equivalent of 24 chicken eggs. How about some pickled eggs or "century" duck eggs? And prepare to be awed by the "Michelangelo" of the egg-shell world as he sculpts egg shells less than 1/32 inch thick into jaw-dropping works of art.

Gunny explores the history of armored vehicles--the steel plated, multi tasking vehicles designed to do everything from carry troops to field reconnaissance to bringing their own brand of firepower to the battlefield. Featured armored vehicles include: The M8 Greyhound; the German 251 Halftrack; the Bradley Fighting Vehicle; and the high-tech MRAPS, designed to protect our troops from IED's and roadside bombs.

Informational programming.

Informational programming.

Informational programming.

Informational programming.

Gunny explores the history of shotguns--from a 17th century Blunderbuss to the modern day, gas-assisted M4 Super 90. Along the way, he "rides shotgun" on a stage coach as he tests a Wells Fargo Coach Gun; fires the groundbreaking shotguns of legendary gun designer John Browning; tests his skeet shooting skills against Olympic Gold medalist markswoman Kim Rhode; and heads to Camp Pendleton to check out the Marines' state-of-the-art shotguns.

Could a killer earthquake strike America's heartland? If history proves true, the answer is yes. The 1811-1812 New Madrid Earthquakes (centered in southeast Missouri) rank as some of North America's most catastrophic natural disasters. Stretching more than 160 miles, a system of earthquake faults lurks beneath the Mississippi River basin, loaded and ready to erupt. And it's happened before. Pioneer residents of New Madrid, Missouri were thrown from their beds in the early hours of December 16, 1811 when an estimated 8-point earthquake hit. But it wasn't just one event. Multiple shocks were experienced over the next three months--the largest caused the Mississippi to flow backwards. No earthquake sequence has lasted so long, produced so many shocks, nor created such astonishing phenomena on land and water. The New Madrid Fault remains a seismically active area and experts expect a repeat. The only question is when...

A controversial scientific theory states that gigantic eruptions of methane gas from deep in the ocean have occurred regularly throughout history. Although a global-scale methane eruption today is highly unlikely, there may be stagnant, oxygen-poor basins in the ocean where methane might accumulate. Even a small explosion could cause a catastrophe. Imagine what would happen if such an event occurred in the mid-Pacific. Tsunamis would be generated in continuous waves, striking Hawaii and the entire West Coast. Coastal areas would be flooded for miles inland. Methane/water clouds would auto-ignite and the massive fires could cause widespread destruction. Consequences could be global. Whatever humanity survives would be thrown into a Dark Age.

This island in the middle of San Francisco Bay has a forbidding reputation. Native Americans believed it to be a place of evil spirits. When it became a federal prison in 1934, only the most violent and difficult prisoners in the U.S. were sent there. It was reputed to be escape proof; only three men have ever managed to get off the island. They left in 1962 and have never been found. MysteryQuest investigates to determine whether they could have survived the icy waters of San Francisco Bay.