Land of Woods

The was once home to an Anbu group called the Prajñā Group.

History
In the anime, Konohagakure once sent a team to meet with the Prajñā Group in an attempt to establish an alliance, but anticipating a betrayal on their part. The Prajñā Group did betray them, and were all but exterminated.

Years later, their remnants tried assassinating the Candidate Sixth Hokage Danzō Shimura, who had been the one to send the team that killed many of their shinobi, but failed and were killed.