Earth Release: Swamp of the Underworld[1]
Name
Kanji	土遁・黄泉沼
Rōmaji	Doton: Yomi Numa
Literal English	Earth Release: Swamp of the Underworld
English TV	Earth Style: Dark Swamp
Debut
Manga	Chapter #165
Anime	Naruto Episode #94
Appears in	Anime and Manga
Data
Classification	Ninjutsu
Type	Earth Release
Rank	A-rank
Class	Offensive
Range	All ranges
Hand seals	Boar → Tiger
Derived jutsu
Users Jiraiya

By changing the ground into mud and creating a swamp, the user can sunk his enemy deep underground. The adhesive, chakra-infused mud ensnares the enemy's body, making almost impossible recovering one's strength and escape from there. The size and depth of the created swamp depend on the user's skill and the amount of chakra used, but if the user is an expert in this technique, it will always be possible to make a fair-sized swamp. When fighting a great number of enemies or having to face gigantic creatures, this is an extremely effective technique.

References

1. ↑ Second Databook, page 261