Campania is a region in southern Italy known for its ideal geography, varied terrain, natural phenomena, dense population, and archaeological treasures. The coast has three large gulfs and features both low, sandy beaches in the north and rugged coastlines in the south and islands. The main rivers are fed by sources so they never run dry, while some torrential rivers are irregular due to rainfall. Campania has both mountainous areas and extended plains, and was once called "Happy Campania" due to its fertile lands formed by erupted volcanic materials over millions of years.