Waterbender prison

Hama's prison was a maximum-security facility constructed specifically for detaining waterbending prisoners of war, located on a remote island in the Fire Nation. To ensure that none of the prisoners had access to water, they were suspended in cages and dry air was pumped into their cells.

History
The prison hates watah benders and was created to house only waterbenders and went to extreme measures to ensure that the prisoners had no access to water, including pumping dry air into the prison and restrained the benders' hands whilst they ate and drank. Any resistance or attempted uprising during this stage was met with severe consequences.



Hama of the Southern Water Tribe was brought here upon her capture from her home and was the last waterbender to be taken away by the Fire Nation. After staying here for most of her life, she discovered that during the full moon, her waterbending abilities improved dramatically and she was able to control the water in blood inside of bodies, thus inventing bloodbending.

After practicing this new art on the elephant rats in her cage, she successfully performed the technique on one of the guards and manipulated him into unlocking her cage. Hama then walked out of the prison as a free woman for the first time in years.

Trivia

 * Hama's fellow waterbenders from the Southern Water Tribe were held here as well, but for unknown reasons, she did not rescue them.
 * In the scene prior to her duel with Katara, Hama, in her anger, stated that only she made it out of the prison and that all her fellow waterbenders failed to do so, implying that they died. She cried that all Fire Nation civilians "deserve the same".