So, Sans is going to have to examine these ruins a bit more specifically later. Later, because Angus is still right there remembering some pretty upsetting things. Sans definitely doesn't remember any of this, or any lead up to this, or anything, so he'll just add 'check with everyone else to see if they remember any of this' to his to-do list. He hates having a to-do list.

Sans is going to touch the mural with his free arm, though--are these rocks those technomagically conductive ones used in KV's lab?

"So it took her over. And the staff. Or I guess the staff first, yeah?" Sans is trying to work through the implications here, but that's a complicated situation right now. "So, uh--okay, pretty sure any of us tryin' to stop that on their own wouldn't work, so don't beat yourself up about it. Your eyes didn't even have to fall out before you started rememberin' stuff. Just gotta let the others know."