"Normandy" is horribly broken in every way, as Oetelaer/dragonfist by that point became some sort of crazy religious fanatic with completely insane ideas in everything, including this case of utterly insane map design.
(He also once renamed the same map to "Alcatraz" and called it an unofficial sequel to Duke Ragereaver's Undead Keeper campaign because of more crazy reasoning that he felt the latter was "incomplete" due to not having 20 levels. Yeah. It managed to spark multiple flamewars back then, most of which has since been deleted.)
Just don't touch it, and get rid of it. It's one of the best examples of how Sturgeon's Law applies to DK1 maps.
EDIT: For morbidly curious people,
here's a link of what remains of the madness.