Thinking Sideways: Vitrified Forts - a podcast by Red Seat Ventures/Thinking Sideways
from 2017-11-30T14:25:03
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Primarily found in Scotland ancient forts have been located where the rock walls have been exposed to enough heat to melt it into a glass state and fuse the individual pieces together. How did our ancestors do this and more importantly why?Learn more about your ad-choices at https://www.iheartpodcastnetwork.com
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