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Could the fabled lost city of Atlantis have been located? Using satellite photography, ground-penetrating radar and underwater technology, experts are now surveying marshlands in Spain to look for proof of the ancient city. If the team can match geological formations to Plato's descriptions and date artifacts back to the time of Atlantis, we may be closer to solving one of the world's greatest mysteries.

Watch the full National Geographic: Finding Atlantis movie online at no cost in high-definition (HD) quality. No downloads needed—simply click to play and experience the excitement with English subtitles included for your convenience.