Maple Pass View east from above Lake Ann. Mountains on the far side of Granite Creek and beyond the dashed contact line are carved from granite of the Golden Horn batholith.
Dotted line is hidden contact behind Whistler Mountain.
Foreground ridges are in tonalite of the Black Peak batholith. Views of a wandering batholith Black Peak from trail to Maple Pass. Black Peak and its attendant ridges display cliffs and glacier-sculpted ridges, known as aretes. Orange and yellow peaks rise to the east, across Granite Creek valley and the highway. Some geologists believe that the Chelan Mountains terrane may have been located far to the south when it was invaded by Black Peak magma, but was more or less where it is today by the time Golden Horn magma rose up into it.