Dark Area

The Dark Area (ダークエリア Dāku Eria?) is a jet-black, abyssal "graveyard of deleted data" full of evil energies governed by Plutomon, and located within a spatial distortion of the Digital World, below the Net Ocean. How it came to be within the Digital World is a mystery whose secrets are known to be held by GranDracmon, although it protects them well. The Dark Area, or more often its guiding ethos, is sometimes known as the "Dark Side" (ダークサイド Dāku Saido?), and the cunning and evildoing Digimon who have been lured into joining it are said to have been "won over to" or "tainted by" the Dark Side.

Trivia

 * Dark Area is similar to Hell where the souls in fiction and real life condemned for all eternity.