Guard posts are useful lookout points. One should place them in areas that need to be defended to alert them if enemies attack. Such areas include areas close to enemy dungeons, Hero Gates, exposed areas such as large patches of earth floor, water or lava, open areas of gold or gems to protect the player's Imps, or important parts of one's dungeon. Guard Posts can also be used/abused to wall off exposed areas of water or lava - the height difference between the terrain stops creatures from being able to get past, allowing a Keeper to effectively wall themselves off or trap creatures.