Bath and North East Somerset Age hill fort or stock enclosure. A Long barrow site believed to be from the Beaker people was flattened to make way for RAF Charmy Down. The archaeological evidence shows that the site of the Roman Baths' main spring was treated as a shrine by the Celts, and was dedicated to the goddess Sulis, whom the Romans identified with Minerva; however, the name Sulis continued to be used after the Roman invasion, leading to Bath's Roman name of "Aquae Sulis" (literally, "the waters of Sulis"). Excavations carried out before the flooding of Chew Valley Lake also uncovered Roman remains, indicating
Geothermal energy a renewable energy source like geothermal. But as a result of government assisted research and industry experience, the cost of generating geothermal power has decreased by 25% over the past two decades. In 2001, geothermal energy costs between two and ten US cents per kWh. Hot springs have been used for bathing at least since Paleolithic times. The oldest known spa is a stone pool on China's Lisan mountain built in the Qin Dynasty in the 3rd century BC, at the same site where the Huaqing Chi palace was later built. In the first century AD, Romans conquered "Aquae Sulis",