- Name: Wood Release Secret Technique: Birth of Dense Woodland (木遁秘術・樹界降誕, Mokuton Hijutsu: Jukai Kōtan; English TV "Secret Earth Jutsu: Deep Forest Creation")
- Type: Kekkei Genkai, No rank, Offensive, Defensive, Supplementary, All ranges
- Users: Hashirama Senju
- Debut (Anime): Naruto Episode 71
- Debut (Manga): Chapter 120
This technique is unique to the Wood Release Kekkei Genkai of Hashirama Senju. It allows him to force trees to grow on any surface, and can easily create a dense forest anywhere. It was this technique that allowed Hashirama to build the foundations of Konoha. This jutsu can also be used to bind an opponent in a tree 400 meters tall and explode causing great devastation, and alter a battlefield for his own uses.