Uttarkanda deals with the tragic part of Sita being forsaken by Rama, Sita was left in the forest near Valmiki’s hermitage, birth of twins Lava and Kusa to Sita in the forest, disappearance of Sita to the Nether world, and finally Rama leaving this mundane world to His abode in the heaven, along with His brothers and other devotees during His life time.