From Zelda Wiki, the Zelda encyclopedia
An Ice Dungeon may refer to any of the ice-themed dungeons of The Legend of Zelda series.
Ice dungeons are frozen and are located in icy areas such as mountain tops, and can be somewhat difficult to explore because of the obstacles (such as icy enemies and sources of the cold that can freeze Link, slippery floors, falling ice needles, deep snow, and so on). It is also common to move blocks in these dungeons, although the low friction of the floor can make this more difficult than usual.
List of Ice Dungeons