Lovely Ladies and Pleistocene Behemoths: A Visit to the Hollow Earth with Edgar Rice Burroughs
Caroline Munro, and a pair of Pleistocene behemoths, in At the Earth’s Core
I’ve had a lifelong fascination with “hollow earth” stories, a style of fantasy fiction that presents ancient, lost societies of people (and/or humanoids) living deep under the earth, where Jurassic and Pleistocene behemoths — as well as uncategorized horrors — struggle to survive in the subterranean jungles of a sunless world.
My favorite of this genre is the Pellucidar series, by Edgar Rice Burroughs, which began in 1914 when At the Earth’s Core was serialized in All-Story Weekly, before the novel was published in book format.