The Prehistoric netherworld is a vast air pocket deep under the Earth's crust. Jimmy Olsen once fell to the location from an entry point at Breathing Cave.
The New Adventures of Superman
Ad blocker interference detected!
Wikia is a free-to-use site that makes money from advertising. We have a modified experience for viewers using ad blockers
Wikia is not accessible if you’ve made further modifications. Remove the custom ad blocker rule(s) and the page will load as expected.