Disney tunnels are not tunnels, they are the first floor since Florida is a swamp. Magic Kingdom Park is the second floor, people just don’t realize it.

https://m.youtube.com/results?search_query=disney+tunnel+tour

“The largest system of utilidors is beneath Walt Disney World's Magic Kingdom, but they are not a basement. Because of an elevated water table, most of these tunnels were actually built at ground level, and the Magic Kingdom was built above that. All the guests of the park see streets that are elevated by one story. Parts of Fantasyland, including the Cinderella Castle, are at third-story-level. The ground's incline is so gradual that guests tend not to realize they are ascending to the second and third stories. The Magic Kingdom is built upon soil which was removed from what is now the Seven Seas Lagoon.[2]”