These are denser than regular earth therefore, they require extra adjacent matches to clear them. In addition to dirt, the Gold Rush mini-quests feature rocks, stones, and boulders. Special Gem effects can remove earth as well. The goal of each mini-quest is to clear the dirt and unearth a specific number of nuggets by matching gems next to the ground.
Embedded within several of these are gold nuggets. In Gold Rush mini-quests, the bottom three rows of the game board consist of dirt squares. A dialog box providing information about the first Gold Rush mini-quest.