Virtually nothing is known about the geography of the Black Drum Kingdom, as it has yet to be explored in-depth. However, it is known to be in the South Blue, with a huge castle and rather stormy weather in the skies.
- ↑ 1.0 1.1 1.2 One Piece Manga — Vol. 64 Chapter 635, cover story: From the Decks of the World Vol. 19.
- ↑ 2.0 2.1 2.2 One Piece Manga and Anime — Vol. 82 Chapter 823 (p. 8) and Episode 778, Black Drum Kingdom located in South Blue.