At the Earth's Core

When Abner Perry invents a vehicle that essentially drills through the earth, he takes it to his good friend (and independently wealthy man about town) David Ennis. And what else can they do? Drill down into the earth, of course. What they find there isn't what we'd expect: it's an inner world called Pellicidar, a place where the sun neither sets nor rises - because what appears to be the sun is n...