Bricked Entrance The right portal used to go straight into the basement of the hotel, judging from the ruins. Related Similar Images ...based on the tags: bricked-doors, rocks, tunnels... The mill was powered, in part, by water flowing through turbines under it. After the flow worked the industrial heart of the flour mill, it was exit to the Mississippi here. A natural stone floor in Brewery Creek’s upper path has been worn smooth. Approaching the tunnel I heard about for so long… Hand-shooting 4×5 underground. Must be Kate Hunter. The elevator works on gravity… this is where a conveyor belt was to move the grain toward the main elevator to be loaded into ships. The Harrison flour mill, completed in 1897 and expanded in 1901 and 1902. The tunnel that I am standing on probably transported grain from the elevator to the mill. Medium Format. They remodeled, apparently. One thing that made the Eagle Mine unique is the underground mill, left of this picture. As the rocks moved down the mill, they would be turned into finer and finer powder. Check that waterfall!