The eternal frost mod for Minecraft is simply a modification that adds another dimension to your game known as the "Freezer." This new dimension will be located on the side opposite the Nether. This dimension is obviously very cold and you must keep warm with blue fire in order to prevent frostbite.
Gamers will have access to an underwater area (including the dungeons). There are also three other dungeons that will open after breaking special blocks while mining. There are also other biomes to explore and villages to discover within the eternal frost mod.