Tuonela (Finnish: [ˈtuo̯nelɑ]; lit. 'Tuoni's abode') is the realm of the dead or the Underworld in Finnish mythology. Tuonela, Tuoni (pronounced [ˈtuo̯ni]), Manala (pronounced [ˈmɑnɑlɑ], 'Underworld'), Vainajala (pronounced [ˈvɑinɑjɑlɑ]) and Mana (pronounced [ˈmɑnɑ]) are used synonymously. Similar realms appear in most Finnic cultural traditions, including among Karelian, Ingrian, and Estonian beliefs. In Estonian mythology, the realm is called Toonela or Manala. Tuonela can also refer to a grave or a graveyard. Description.
https://en.wikipedia.org/wiki/Tuonela