"Dad found some tracks leading into Weeping Pond the day the torch went out on top of the hill. We were checking to make sure that pond hadn't suddenly gotten toxic again now that the fire was out. He guessed that a group of people had gone into the pond but not come out gain, and surmised that there were caves with their entrances submerged. I don't know much more than that though. He was worried that we'd try and follow him in, so I think he was intentionally being cagey about it, for better or for worse. I do know that they turned back once his group found the robot. I think he'd realized that the caves went much deeper than anyone expected. I know he did give Councilor Dolga the details though, which is one of the reasons she'll want to talk to you. Four teams have been lost already, I doubt she'd want there to be a fifth."