Reveal Map

is a Dungeon Special available in Dungeon Keeper and Dungeon Keeper 2. This powerful special will reveal the entire map of the current level, including the Fog of War; there won't be a hidden tile in the level. That means that if the enemy Keeper is doing something, you will be able to see it. It also means that you will be able to cast spells like Lightning Strike/Thunderbolt on enemy units.
In Dungeon Keeper, due to how they are programmed, blocks of Gold Seam are not revealed. As any player can always see where gold is placed on the level, but cannot see once it is mined, any blocks of Gold Seam that are dug out will turn into Fog of War.