While navigating through the tunnels and having been separated from Sokka and the singing nomads, Katara, Aang, and Appa discovered the tomb hidden deep inside the mountain. Initially, they believed they had found the exit of the labyrinth, but after Appa knocked down the large stone sealing the entrance and the light of their torches fell upon two large sarcophagi resting on an enormous round stone, they realized it was a tomb. Engraved in the sides of the resting stone was the story of Oma and Shu, telling the tale of two lovers, now forever resting together in the tomb.