The Eye-Dashwa pluton is among the youngest major intrusions in the Atikokan area and is compositionally zoned from a quartz monzodiorite rim to a granite core. This report provides the regional geological setting of the Eye-Dashwa pluton by defining geological boundaries as well as mineralogical, petrological, and geochemical characteristics of the pluton and neighbouring lithological units. Major structural fractures and metamorphic conditions are discussed, and using isotopic age data, the geological events affecting the Archean crust in the area is examined. Certain unresolved problems in Archean geology of the area are identified.