What on Earth? Season 12 Episode 7
Nevada's Mystery Marking
Satellite images capture an enormous X shape mysteriously carved with precision in the remote Nevada desert; experts investigate a military emergency landing field linked to one of the most astonishing test programs in aviation history.
- 12 - 10Arctic Hunters of NorwayMar. 16, 2023
- 12 - 9Secrets of Biosphere 2Mar. 09, 2023
- 12 - 8Ghost Ship of IrelandMar. 02, 2023
- 12 - 7Nevada's Mystery MarkingFeb. 23, 2023
- 12 - 6The Boneyard of ArizonaFeb. 16, 2023
- 12 - 5Blood Feud of Gresham CastleFeb. 09, 2023
- 12 - 4Turkey's Lost Terror DomeFeb. 02, 2023
- 12 - 3Indiana's War FactoryJan. 26, 2023
- 12 - 2Mystery of the Fallen StarJan. 19, 2023
- 12 - 1Bullseye in the SkyJan. 12, 2023