Nitrate

What on Earth? · S11 · E4

Mystery of the Welsh Mine

  • TV-14
  • Jul 13, 2022
  • 42 min

Satellites capture ruins amid bizarre structures on a Welsh mountaintop.

Watch free on Spectrum On Demand

About this episode

Satellites capture ruins amid bizarre structures on a Welsh mountaintop.

Season 11

10 episodes
  1. 1Secret Soviet Spacecraft

    42 minJun 22, 2022

    Satellites capture a bizarre industrial complex in desert of Kazakhstan.

  2. 2Range of Nazi Evil

    42 minJun 29, 2022

    Satellites capture dozens of parallel lines hidden in Polish woodlands.

  3. 3Doomsday Lair of Greece

    42 minJul 6, 2022

    Satellites capture bizarre structures on the Greek island of Kefalonia.

  4. 4Mystery of the Welsh Mine

    42 minJul 13, 2022Now viewing

    Satellites capture ruins amid bizarre structures on a Welsh mountaintop.

  5. 5Riddle of Sardinia Tower

    42 minJul 20, 2022

    Satellite images capture a triangular castle-like tower located on the Mediterranean island of Sardinia; experts investigate the relics of a declining ancient civilization that may have suffered a celestial catastrophe.

  6. 6Circles of the High Kings

    42 minJul 27, 2022

    Satellite images capture two conjoined circular structures embedded in the lush and rolling landscape of Ireland; experts investigate and uncover an ancient site linked to legendary figures and the elusive hunt for the Ark of the Covenant.

  7. 7Russia's Lightning Lab

    42 minAug 3, 2022

    Drone images capture oddly shaped towers in a forest clearing near Moscow.

  8. 8Poland's Secret Nazi Compound

    42 minAug 10, 2022

    Satellites capture a series of zigzagging patterns in Polish woodlands.

  9. 9Holes of Dead Sea Destruction

    42 minAug 17, 2022

    Drone images capture enormous holes scattered along the Dead Sea coastline.

  10. 10Ancient Rome's El Dorado

    42 minAug 24, 2022

    Satellites capture bizarre markings etched deep in the mountains of Spain.