Is the country Arcadia in the underworld?

Arcadia is not a country in the underworld; rather, it is a region in ancient Greece known for its idyllic landscapes and association with pastoral poetry and harmony with nature. In mythology, it was often depicted as a paradise, contrasting with the underworld, which was a realm of the dead. The term "Arcadia" has been used in literature to evoke a sense of peace and simplicity, but it is not located in the underworld.