The entrance to hell.

Is this a picture of Hades Cavern? Incredible cave which experts believe inspired the Greek legend of Hades. The cave named Alepotrypa, dates back to the Neolithic Age but has remained undiscovered in Southern Greece until the 1950's. Archaeologists have uncovered tools, pottery, obsidian, silver and copper artifacts. Findings suggest cave dwellers might have connected the cave with Hades. The name Alepotrypa means 'foxhole' is nearly the size of four football pitches with its own underwater lake. It remained undiscovered in Diros Bay, Mani, southern Greece, until a man walking his dog found a tiny entrance to the cave. Experts have spent the last few decades excavating the cave and believe that hundreds of people lived here, this makes the cave one of the oldest prehistoric villages in Europe, before the cave entrance collapsed burying everyone alive 5000 years ago.