Photos: Persephone, the robot guide, leads visitors in a Greek cave

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Alistrati: Persephone is a tour guide in Greece, but perhaps not the type people are used to. Billed as the world's first robot tour guide inside a cave, Persephone has been welcoming visitors since mid-July to the Alistrati Cave in northern Greece. The multilingual robot covers the first 150 meters of the part of the cave that is open to the public. In the remaining 750 meters, a human guide takes over. Image Credit: AP

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The robot was named Persephone because, according to one version of the ancient Greek myth, it was in a nearby plain that Pluto _ the god of the underworld who was also known as Hades _ abducted Persephone, with the consent of her father Zeus, to take her as his wife. The robot can give its part of the tour in 33 languages and interact at a basic level with visitors in three languages. It can also answer 33 questions, but only in Greek. Image Credit: AP

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Nikos Kartalis, the scientific director for the Alistrati site, had the idea of creating the robot when he saw one on TV guiding visitors at an art gallery. Seventeen years later, "we got our funds and the robot guide became a reality," Kartalis told The Associated Press. The robot was built by the National Technology and Research Foundation and cost 118,000 euros ($139,000). Image Credit: AP

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"We already have a 70% increase in visitors compared to last year since we started using" the robot, says Kartalis. "People are enthusiastic, especially the children, and people who had visited in the past are coming back to see the robot guide. It is something unprecedented for them, to have the ability to interact with their robot by asking it questions and the robot answering them. Many foreign visitors couldn't believe Greece had the capacity to build a robot and use it as a guide in the cave." Image Credit: AP

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The robot moves along a walkway, passing through an ornate landscape of stalactites and stalagmites. These varied formations can reach 15 meters (50 feet) tall and are seen throughout the cave's nearly 1 kilometer (1.6-mile) walkway, which is accessible to people with limited mobility. Image Credit: AP

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"This cave is one of the most beautiful, not only in Greece but in Europe, as well," says Kartalis. "It has stalactites and stalagmites in many shapes and colors, even red." He said the cave was 3 million years old and was first explored in 1974 by the Hellenic Speleological Society and a team of Austrian speleologists. It opened to visitors in 1998. Image Credit: AP

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Persephone, with a white body, black head and two luminous eyes, moves on wheels, guiding visitors to the first three of eight stops along the walkway. She can do two more stops, but her low speed slows down the tour, which is conducted in three languages simultaneously. Persephone's creators are considering ways to speed her up. Image Credit: AP

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The robot's begins by saying: "My name is Persephone, I am the daughter of the goddess Demeter and the wife of Pluto, the god of the underworld. I welcome you to my under Earth kingdom, the Alistrati Cave.'' Many visitors are intrigued by the robot guide. Image Credit: AP

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Persephone is not the only technology used inside the cave. There's a cellphone app in which a visitor, scanning a QR code, can see the Alistrati Beroni. That's a microorganism that is only found in this cave, in the huge mounds of bat droppings left behind when the cave was opened and the bats migrated elsewhere. Image Credit: AP

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Evdokia Karafera is one of the tour guides who partners with the robot. "It is helpful, because it speaks many languages. There's just a little delay in the touring,'' she said. "Most find it fascinating, especially the children, and find it interesting that it speaks many languages." Image Credit: AP

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Persephone guides the visitors inside Alistrati cave, about 135 kilometers (84 miles) northeast of Thessaloniki, Greece, Monday, Aug. 2, 2021. Persephone, billed as the world's first robot used as a tour guide inside a cave, has been welcoming visitors to the Alistrati cave, since mid-July. Image Credit: AP

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