On another part of the Cerberus site the Bluefin 12 BOSS AUV detected two more buried objects similar to the other cannon found on the shipwreck.

As little as 20 meters (66 feet) below the surface of Lake Huron, the third largest of North America's Great Lakes, peculiar geological formations — sinkholes made by lake water dissolving parts of an ancient underlying seabed — harbor bizarre ecosystems where the fish typically found in the huge freshwater lake are nowhere to be seen.

Related Links

Thunder Bay Sinkholes 2008

Thunder Bay Sinkholes 2008: Mission Summary

NOAA Ocean Explorer Gallery

Download high-resolution image (jpg, 164 Kb)