Rigel and Grun explored the altar to see if there was any hidden place. They looked around for a while and they didn't find anything unlike the hidden dungeon. There was no hidden teleportation, so they both left that place and left the entrance open so Players could see it when they cleared the dungeon.
"Have you ever wondered?" Grun asked as he followed Rigel from behind.
"About what?" Rigel asked back and looked at Grun from over his shoulder.
"The secret of this tower, the existence of a being that originally ran this place. Based on the information and writings that we saw earlier. It appears the Gods invaded this place and took over it," Grun answered.
Rigel already knew about it from Lysara'elmaris and the whole truth about what happened to the tower and her. He didn't have a reason to tell Grun about it so he kept quiet and kept it to himself.
"I'm thinking about it. What about it?" Rigel responded.