Man-made 'tracks' in Thunder Bay: In the northern half of Thunder Bay there are numerous 'tracks' that appear similar to anchor drags, but they are often 17m wide. Some are raised a few meters above the lake bottom.Man-made 'tracks' in Thunder Bay: In the northern half of Thunder Bay there are numerous 'tracks' that appear similar to anchor drags, but they are often 17m wide. Some are raised a few meters above the lake bottom.

Numerous man-made “tracks” found in the northern half of Thunder Bay appear similar to anchor drags, but they are often 17 m (56 ft) wide. Some are raised a few meters above the lake bottom. Image courtesy of Thunder Bay 2010 Expedition, NOAA-OER.

 

Related Links

Thunder Bay 2010: Cutting Edge Technology and the Hunt for Lake Huron’s Lost Ships

Thunder Bay 2010: Mission Summary

NOAA Ocean Explorer Gallery