Sky History Saturday

Documentary shedding light on unusual discoveries made in the darkest places on Earth and venturing into the realm of the supernatural

Through use of recently declassified CIA documents, the X-Files actor uncovers tales of governments striking dark deals with cults, mobs and even sworn enemies

Archaeologists identify a site containing unknown structures, a lake full of jellyfish is studied, and Argentinian researchers make a discovery

Archaeologists find an ancient structure built on granite columns, puzzling stone spheres are found in Costa Rica and Mexican skeletal remains emerge

A grim discovery in a Swedish lake reveals shocking ancient practices and the fossil of a previously unknown mammal is found in the Canadian Arctic

In a Danish bog, hundreds of mutilated ancient bones are found, while a mysterious deserted island belonging to Russia is explored