Thinking Sideways: Klerksdorp Spheres - a podcast by Red Seat Ventures/Thinking Sideways

from 2014-03-27T13:39:17

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Strange round stones are being found in a mine in South Africa, they typically have 1 to 3 ridges around their circumference and predate the material surrounding them. Some say natural phenomena, out of place artifacts, or a sign that another form of intelligent life put them here.Learn more about your ad-choices at https://www.iheartpodcastnetwork.com