What on Earth?

Grand Canyon Treasure (3x1)

Air date: Nov 15, 2016

Increase interest, due to the conflict in Ukraine, leads to the discovery of a strange white splotch in the eastern forest near the Belarus border; strange spots near the Grand Canyon may hold clues to the legendary treasure of a notorious bandit; images captured in 2014 show something that looks like an airport in the southern desert of Saudi Arabia that was not there one year before; in 2014 an engineer looking for home building locations on Oke Bay in New Zealand finds something creating a huge wake in the bay; a series of 32 spiral holes seen in satellite images near Nazca, Peru could be an entrance to an underworld; city-size chunk of ice suddenly disappears in Antarctica.