The Takenuma Swamp (Japanese: 竹沼; rōmaji: Takenuma; literally "Bamboo Swamp") was a major source of black mana location on the plane of Kamigawa. A fetid swamp of rotten bamboo, poisoned water, and foul air, Takenuma was home to nezumi-bito, humans, o-bakemono and many other less-than-pleasant things.
The guardian spirit dragon of Takenuma is Kokusho, the Evening Star.
- Miren. A haunted well deep within Takenuma.
- Numai (“swamp home”), once a prospering human city, now a loose group of half-deteriorated buildings. Many of the criminal masterminds of Kamigawa, such as Uramon, have their manors here. There is also a base of the mahotsukai cult, a group of powerful black jushi (wizards), the greatest of which was Kiku. Numai was also once the home of Toshiro Umezawa.
- Shizo. An ancient battlefield with many corpses mummified in the mud.
Notable residents of Takenuma
- Bog Wraith (Tenth Edition)
- Death Denied
- Deathcurse Ogre
- Kiku, Night's Flower
- Psychic Spear
- Pull Under
- Swallowing Plague