Hod suspected that the Balaur were able to invade Beluslan because the Observatory had been destroyed. That was why the Observatory needed to be rebuilt. He told you about Gwendolin, an Aetheric Field Protectress who had been killed by the Balaur. You went to meet her spirit to find out more about the Observatory. You destroyed the Field Suppressors at Gwendolin's request and reported back to Hod. Hod thanked you and said that he would send helpers to start the reconstruction right away.