"Oh, he was...King? I guess, of the Acromantulas. Friendly enough, because Hagrid raised him, but his children were not and tried to eat us on multiple occasions," Ron said, almost nonchalantly. With the number of near-death experiences he'd experienced, nonchalance was really the only approach to take. "Hmm..how long do Centaurs live, do you think? There's one that might talk to us if we could find him. If he's still alive. He was a Professor here for a while."
He nodded in agreement. "And I'm not betting against tentacles," Ron said grimly. Gas and tentacles would probably be the least of the problems. "And that's a good point. Hogwarts is their home, even the greenhouses, so they'd take care of it." He was quite fond of the Hogwarts house-elves, even if this was likely a whole other generation than the ones he'd fought alongside.
"It was a good plan, but even if you had succeeded it wouldn't have worked. He already had..." Ron thought for a moment. "Five, by that time. His diary, Hufflepuff's Cup, the Gaunt family ring, Ravenclaw's diadem, and of course, Slytherin's locket." He ticked them off on his fingers. "By the time Harry killed him in 1998, he'd made two more. So, seven total" He nodded in agreement. "I do, and Harry. Our friend Hermione. Dumbledore of course, but he's dead where I come from. Aside from us though, no one. We didn't even tell Kingsley or McGonagall." He paused for a moment. "Snape might have known, but I can't say for sure. He died before we could ask him. Oh, and Professor Slughorn knew some. He's the one who told Voldemort--then known as Tom Riddle--how to make them."
Ron grimaced. "Let's not tempt fate now. The last thing we need is a Voldemort of any age coming here."