Located next to the ruins of the Isle Royale mining Co coal dock. The wooden pilings in the water by the new foot-bridge are what remains of a 600' long, 32' wide coal dock. The dock provided coal to operate the Isle Royale Co's 6 shafts, railroad, central surface plant, stampmill, and pumping station. In the 40's, the dock was in Portage Lake, but stampsands have landlocked it. To see the ruins of the stampmill, go west to the Krist Oil gas station, and look uphill. Check the images to see a picture of the dock in operation.
Building to west on the trail to cache was Isle Royale's water pumping station.