Toynbee Tiles
(wikipedia.org)
The Toynbee tiles, also called Toynbee plaques, are messages of unknown origin found embedded in asphalt of streets in about two dozen major cities in the United States and three South American cities.
The Toynbee tiles, also called Toynbee plaques, are messages of unknown origin found embedded in asphalt of streets in about two dozen major cities in the United States and three South American cities.
Solving the Siberian Crater Mystery
(nautil.us)
In the northern reaches of Russia, enigmatic craters have begun appearing in broad expanses of windswept tundra.
In the northern reaches of Russia, enigmatic craters have begun appearing in broad expanses of windswept tundra.
Mysterious Nazca Glyphs Have Just Been Revealed
(sciencealert.com)
In the desert of southern Peru, a mystery has been unfolding over decades.
In the desert of southern Peru, a mystery has been unfolding over decades.