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

Persephone guides the visitors inside Alistrati cave, about 135 kilometers (84 miles) northeast of Thessaloniki, Greece. 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. — Photos: AP

ALISTRATI, Greece: 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, 135 kilometers (84 miles) northeast of the city of Thessaloniki.