The word Phlegraean comes from the greek meaning burning. Solfatara is the most active part of this volcano system with fumaroles (geysers) that shoot sulphureous gases into the air from openings in the ground. It is an eerie, other worldly atmosphere. The crater here is 4,000 years old and the Romans called it Forum Vulcani (home of the god Volcano). We thought it was really cool. Here are a few shots that hopefully give you an idea of what it is like.