читать дальшеLet me contribute something to this thread. There are some interesting variations of the Ramayana in Assam which actually continue the story beyond Sita's decent into the earth. And they focus on Hanuman.
According to Patali Kanda by Dvija Panchanana and the Adbhuta Ramayana by Raghunatha Mahanta (not to be confused with a Sanskrit text also called Adbhuta Ramayana), after her descent Sita resides in Patala as Vratesvari Devi. She misses her sons terribly and eventually sends one or more nagas to abduct them and bring them to her. Naturally, Ram is worried about his children and Hanuman is sent to bring them back. He descends into Patala and engages in a number of adventures in his efforts to find them. I believe he even fights the nagas (I will have to check the books to confirm this). He also changes into several different forms. At one point he even transforms into a corpse to lure Sita out and convince her that he means no harm. Sita makes one final effort to defeat Hanuman by creating many doubles of herself. Hanuman fails to recognize the real Sita and threatens to burn himself. This causes Sita to finally relent and reveal herself. She returns her sons to Hanuman. In at least one of these versions Sita herself also returns to Ram.
Speaking of Mahanta, he also wrote the Satrunjaya in which Hanuman leads King Vali's army during his digvijaya.