A basic diagram of how groundwater flows into Lake Huron's sinkholes (not to scale). Image courtesy of Thunder Bay Sinkholes 2008.
Related Links
Thunder Bay Sinkholes 2008: Sept 8 Log
A basic diagram of how groundwater flows into Lake Huron's sinkholes (not to scale). Image courtesy of Thunder Bay Sinkholes 2008.
Thunder Bay Sinkholes 2008: Sept 8 Log