Halkonite puzzle box

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Halkonite puzzle boxes were made from Halkonite steel. They were impenetrable. Nothing could escape them, not even thoughts.

In the 2000s, Sarah Jane Smith used a box made of Halkonite steel to contain a fragment of the Weserbergland meteorite where the Pied Piper had been trapped. (TV: The Day of the Clown)

Behind the scenes

Footnotes

  1. ↑ SJA - Alien Objects
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