This
is an active lighthouse. It, along with the North
Breakwater Light, are used to mark the breakwater
at the head of the Duluth Ship Channel where it juts
into Lake Superior. Some pretty massive ships maneuver
through this precariously slip every day, and in Duluth's
frequently misty weather any extra warning is welcome.
The channel is only 300 feet wide, and is very busy
as the freighters and ore carriers of the Great Lakes
scurry in and out to make their deliveries before
the port freezes over in winter.