In 1954, construction at DISNEYLAND was in full swing. As construction teams began digging out rivers, lakes and other amusements, they were instructed not to place all the dirt in one location. This instruction was ignored and a hill of dirt quickly sprang up between Fantasyland and Tomorrowland.
When the park opened, the area was landscaped and became a place to relax away from the hustle and bustle of the rest of the Magic Kingdom. At some point, the park laid snow on the hill during the Christmas season. Mr. Disney quickly drew up other plans and four years later the hill was replaced by its current resident- Matterhorn Mountain.