There is no denying the fact that much of the Precambrian rock in Minnesota is covered rather continuously by glacial deposits. Obviously, this makes the job of mineral exploration more challenging. On the other hand, the very fact that highly prospective exploration targets are concealed, and thus have remained unevaluated, presents opportunities for firms willing to invest in the methods and strategies required for subsurface investigations. Recently completed and ongoing mapping of glacial deposits and bedrock; using outcrops, archived drill core and exploration data, detailed geophysical maps and models, test drilling, and geochemical sampling of unconsolidated sediments provides the geologic background necessary to support new exploration efforts. The reward of a major discovery could await a company that is imaginative, technologically capable, and sufficiently patient to invest in a long-term exploration program.