Discovery Bay was an unbuilt land designed for Disneyland in the 1970's. Attractions from "20,000 Leagues Under the Sea" and "The Island at the Top of the World" were set to be prominent features.
Much of Discovery Bay was set to be tied into the backstory from Big Thunder Mountain Railroad. Jason Chandler created Discovery Bay as a place to fund and provide exploratory space for inventors whose odd ideas were turned down by everyone else, much like himself. He established the location near San Francisco and one of his first adventures was to meet with Ned Land to unbury the Nautilius from the depths of the sea and return it to Discovery Bay.
“Discovery Bay.” Disney Wiki, disney.fandom.com/wiki/Discovery_Bay.
Magicart87. “Society of Explorers and Adventurers.” WDWMAGIC, 24 July 2017, forums.wdwmagic.com/threads/society-of-explorers-and-adventurers.929599/.
“OPINION: THE SOCIETY OF EXPLORERS & ADVENTURERS!” Dizzoriented, dizzoriented.myportfolio.com/opinion-the-society-of-explorers-adventurers.