View of fog and clouds in the Aaron Creek valley, Alaska

View of fog and clouds in the Aaron Creek valley with tail of R66 helicopter in right foreground. Geologist are conducting field work in Aaron Creek valley from east flank of Berg Mountain in the Stikine River corridor on the Transboundary Waters Project. The purpose of this work is to understand the geochemistry, mineralization, and distribution of the rocks that contribute to the chemistry of streams in the Stikine River corridor.