Sky History HD Saturday

How many ancient architectural wonders bear similarities despite being built by different civilisations, questioning whether aliens could have designed them

The possibility a curse could exist on Tutankhamun's tomb, in the form of alien technology designed to protect an incredible secret about the past

Documentary following the lives of men living off the land in some of America's most inhospitable mountain ranges

Mike journeys to an uninhabited island to hunt a herd of wild buffalo. Lauro trains for the upcoming Iditarod with a gruelling 260-mile run through the Alaskan wilderness

After raising the 40,000lb boulder from Lot 8, the team is astonished to find a manmade feature that may be hiding a shaft or tunnel.

Kevin Sempé dives in search of wrecks harking back to the Roman Empire's greatness. The journey begins with the Nave Romana

Kevin Sempé explores the bay of Saint-Pierre in Martinique, where ships smouldered and sank following the devastating volcanic eruption of 1902

Kevin Sempé dives into the blue waters of the Caribbean to find the relics that litter the sea floor from piracy's heyday in the region

Kevin embarks on a challenging dive in the Atlantic Ocean to explore a battleship that saved the Northern Navy in the American Civil War

The women outnumber the men in Rosamond, as Dusty and his girlfriend discover a stockpile of vintage TV memorabilia. Brandi enlists the help of Danielle and Lisa to dig for gold

Lancaster turns into Ivy's honeypot, so everyone had better watch out or they might get stung. Lisa plans to use her brain when selecting lockers

In West Covina, Brandi makes a profitable land grab. Kenny can't seem to satisfy his hunger, while Barry takes an opportunity to poach from the competition

Ivy scores a packed locker and stumbles across an antique of unusual origin. Darrell grabs a smaller unit, but finds that good things sometimes come in petite packages

Rene has lukewarm results seeking profits in Stanton. Dusty finds a hoard of quality equipment, inking himself a decent payday

Barry believes all the whales are coming to the big auction in Fullerton as he takes Dusty under his wing to test him

Guy Walters and Justine brave Austria's Lake Toplitz, where Nazi gold myths fade but the thrill of the hunt endures

Dan Jones explores the turbulent history of Lancaster Castle, which has witnessed scenes of historical, cultural and political significance throughout the centuries

Dan Jones explores Arundel Castle, in West Sussex, which has been the seat of the Dukes of Norfolk and their ancestors for over 850 years

First-hand accounts and rare archive footage reveal the devastation of the German attack on France

Archival footage and eye-witness accounts illustrate how, as the war progressed from the ground into the sky, young brave pilots gave their all for the Allied cause

Eye-witness accounts and archival footage describe the German U-boat push into British waters, featuring stories of bravery and new technologies employed in the conflict

The life and exploits of Knut the Great, who claimed the crowns of England, Norway and Denmark and forged an unprecedented union between Nordic and Anglo-Saxon lands

A fire-breathing crater burns in the middle of a desert - and some suspect it is a gateway to Hell. Scientists assess how an eight-foot-long Bull Shark ended up on a golf course

A father and his children are filmed as a bolt of lightning strikes at them from a clear blue sky. Scientists try to work out why a football stadium dome catastrophically collapses

In the Gulf of Mexico, a shark is attacked and eaten by a mysterious predator. Biologists look at the footage to work out if a prehistoric arthropod has risen from the deep

Dan Jones explores the turbulent history of Lancaster Castle, which has witnessed scenes of historical, cultural and political significance throughout the centuries

Dan Jones explores Arundel Castle, in West Sussex, which has been the seat of the Dukes of Norfolk and their ancestors for over 850 years

Photographs of a 25-mile structure known as the eye of the Sahara, and an extraordinary cloud emanating from an island in the Indian Ocean