What on Earth?

What on Earth?

Nevada's Mystery Marking (12x7)


Air date: Feb 23, 2023

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.

  • Premiered: Feb 2015
  • Episodes: 163
  • Followers: 23
  • Running
  • Science Channel
  • Tuesday at 21