Starting on August 11th, a team of Swiss and Greek scientists will seek a "prehistoric countryside" in the southeastern Peloponnese peninsula, University of Geneva researcher Julien Beck told AFP. The month-long mission, jointly organised with the Swiss school of archaeology and the Greek culture ministry, will search around the Franchthi cave in the Argolic gulf, where early Europeans lived between the Paleolithic and Neolithic periods. The cave was eventually abandoned around 3,000 BCE but scientists assume the inhabitants must have built a village nearby. "This cave was inhabited continuously for around 35,000 years... and we have reason to believe that towards the end of the Neolithic era, the inhabitants moved to a neighbouring site that is now underwater," Beck said. "If we could find this village, it would be among the oldest in Greece and Europe," he said. PlanetSolar, built in Germany, is 31 metres (100 feet) long and is powered by over 500 square metres of solar panels. In 2012 the catamaran became the first vessel to circumnavigate the globe purely on solar energy. It has an average speed of 7.5 knots, or 14 kilometres (8.6 miles) per hour. Whilst in Greece the boat will aid researchers conducting geophysical research and assist underwater archaeologists in Aegean Sea surveys.