One of the 140 pyramids studied by archaeologists in Madalena do Pico. Were all built in basaltic volcanic rocks known as cookies. Some have up to 13 meters high (equivalent to a building housing four floors) and chambers inside.
Portuguese Association of Archeological Research (APIA)
Similar structures in the Mediterranean
"I'm in Mexico"
Regularity in the orientation of the pyramids
"Defense of historical truth"
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Similar pyramids have also been detected by sonar offshore from the Azores, at the bottom of the sea, According to Charles Berlitz
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