Researchers and filmmakers are exploring the Superior Shoal, an underwater mountain in Lake Superior. (Courtesy of Inspired Planet Productions) ============================================================== * There is an underwater mountain in the middle of Lake Superior * Scientists and filmmakers think it could be a hotbed for aquatic life * They’re using underwater drones to document the volcanic mound * Known to some as the “Freshwater Everest,” if you want to explore this mountain, you don’t go up, you go down. ============================================================= In the middle of Lake Superior, near the boundary between Canadian and US waters, sits the Superior Shoal, a mountain that’s completely...