- "I can go no further. When you reach the altar, it will give you want you need."
- ―The Daughter to Obi-Wan Kenobi
The Altar of Mortis was located on the Wild Space planet Mortis, and it kept hold of the Dagger of Mortis. The altar was located under mountainous terrain underneath a staircase, and it was surrounded by a green aura of fire, which one had to cross in order to retrieve the mystical weapon.
After luring the Chosen One, Anakin Skywalker, to Mortis, the Force wielder known as the Father was betrayed by one of his children, the Son. In an effort to stop the Son, the Daughter took Obi-Wan Kenobi into the altar and informed him that, while she could go no further, he could retrieve the dagger in order to stop the Son.
After the weapon materialized before the Jedi Master, Kenobi took it to Skywalker, but the dagger was intercepted by his Padawan Ahsoka Tano, who was under the Son's influence. The Son then gained control of the dagger and accidentally killed the Daughter, before the Father turned the dagger against himself, rendering the Son vulnerable enough for Skywalker to slay him. With this, balance was in the Force was restored to Mortis, but a blinding white light from the Father's monastery made the entire realm disappear.