r/TheToynbeeTiles; Messages of Unknown Origin
Reddit Explains Conspiracy & the Unknown - A podcast by Pop Media Agency
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Messages of unknown origin are found embedded in asphalt of streets in about 2 dozen major cities in the United States and 4 South American cities. Since the 1980s, several hundred tiles have been discovered and are generally about the size of an American license plate. We discuss what the origins might be and opinions on them.
