Since Lake Michigan partly sits on limestone, it’s likely that the craters on the lakebed are also sinkholes, Ruberg said. Nevertheless, other experts are reluctant to brand the circles ...

In 2002, divers in Lake Huron were swimming among the shipwrecks in the Thunder Bay National Marine Sanctuary. The sanctuary ...

This coming summer will be the last chance to swim or take a boat tour in the waters of Crater Lake for an extended period. Cleetwood Cove Trail, the only legal pathway to the shoreline of the ...