We finally found it! This has to be the obelisk's control room. Fortunately, the consoles here were similar to the ones in the control center that I've used before, so I was able to help Santiago get started.
He's been working on it for a while now, muttering and cursing to himself the whole time. I can't blame him. This is some baffling shit we've... ha! No way! He just said he cracked it! It certainly sounded like he did, too. There was a loud hum and...
Oh. Those are roars. Lots of roars. Time to run, then! I'll finish this later.