A newly discovered 10-foot-tall silver monolith on a muddy bluff in Wales has reignited wild speculation on its origin after similar obelisks appeared in Utah, California, England and Romania.

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The monolith mystery continues as another similar structure was spotted in Corona Heights Park, San Francisco after disappearance from Utah and Romania.

The Romanian monolith was apparently discovered on November 26 ... when they spotted something that seemed like a prop from 2001: A Space Odyssey. “One of the biologists ... spotted it, and we just ...

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