 So that's fascinating. So it's this long tradition of going to the underworld to seek knowledge. Exactly, exactly. And we are still doing that. We have glaciologists now who are boring, auguring down into the ice record, up to a mile down to bring back knowledge of past climates, to foretell our future climates from that knowledge. This is a place to which we have gone, even though it contains darkness, which seems the opposite of knowledge, to seek knowledge.