Fantasyland: The Disneyland Skyway used to travel through these caves, taking guests straight through Matterhorn. Until 1978, when the Matterhorn was refurbished, Skyways riders could see the steel supports, concrete and catwalks that were fully exposed inside the manmade mountain. In 1978, Imagineers made the internal structure more convincing, covering the steel and concrete structure with faux snow and ice. After the Skyway's closing in 1994, Imagineers closed the cave openings further, to enhance the Matterhorn's bobsled theming and to make the removal of the Skyway less obvious.