Thomas Lazar / Ice hanging from arch in sea cave carved in soft sandstone cliffs, frozen lake, Squaw Bay, Lake Superior, Apostle Islands National Lakeshore, Wisconsin, USA, February 2009

Larry Michael / Autumn colours reflected in river water, Ontonagon River, flows into Lake Superior. Michigan, USA.

Jim Brandenburg / Ice crystals, Lake Superior, Michigan

Benjamin Olson / Skim ice in negative thirty degree fahrenheit at sunrise, Lake Superior, Grand Portage National Monument, Minnesota

Benjamin Olson / Cave at night during polar vortex, Lake Superior, Tettegouche State Park, Minnesota, multiple exposures

Jim Brandenburg / Forest on lake shore, Judd Lake, Superior National Forest, Minnesota

Tim Fitzharris / Castle Rock overlooking Lake Superior, Pictured Rocks National Lakeshore, Michigan

Jim Brandenburg / Water Lily (Nymphaea sp) cluster in pond surrounded by coniferous forest, Boundary Waters Canoe Area Wilderness, Minnesota

Jim Brandenburg / Water Lily (Nymphaea sp) cluster in pond surrounded by coniferous forest, Boundary Waters Canoe Area Wilderness, Minnesota

Jim Brandenburg / Red Pine (Pinus resinosa) at edge of lake in Boundary Waters Canoe Area Wilderness with 1200 miles of canoe routes, part of Superior National Park, Minnesota

Jim Brandenburg / Ice along the shore of Burntside Lake at sunset, Superior National Forest, Minnesota

Jim Brandenburg / Moose Lake shoreline covered in frost, Minnesota

Jim Brandenburg / Breeze blown grass of lakeside sedge meadow, Moose Lake, Boundary Water Canoe Area Wilderness, Minnesota

Jim Brandenburg / Prickly Wild Rose (Rosa acicularis) petal, Discovery Lake, Superior National Forest, Minnesota

Jim Brandenburg / Canoe bow with autumn trees, Discovery Lake, Superior National Forest, Minnesota

Thomas Lazar / Hikers on frozen lake looking at sea caves and ice formations, Apostle Islands National Lakeshore, Lake Superior, Squaw Bay, Wisconsin, February 2014.

Thomas Lazar / Icicles hanging from sandstone cliffs on shoreline, Apostle Islands National Lakeshore, Lake Superior, Squaw Bay, Wisconsin, February 2014.

Thomas Lazar / Icicles hanging from sandstone ceiling of sea cave on frozen lake. Apostle Islands National Lakeshore, Lake Superior, Squaw Bay, Wisconsin, January 2014. Exposure composite of 3 images.

Thomas Lazar / Jagged icicles hanging from towering sandstone cliff, Apostle Islands National Lakeshore, Lake Superior, Squaw Bay, Wisconsin, February 2014.

Thomas Lazar / Jagged icicles hanging from towering sandstone cliff, Apostle Islands National Lakeshore, Lake Superior, Squaw Bay, Wisconsin, February 2014.

Thomas Lazar / Icicles hanging from sandstone archway in sea cave at dawn. Apostle Islands National Lakeshore, Lake Superior, Squaw Bay, Wisconsin, February 2014. Exposure composite of 3 images.

Thomas Lazar / Water flowing in crevis of patterned ice formation, Apostle Islands National Lakeshore, Lake Superior, Squaw Bay, Wisconsin, February 2014.

Thomas Lazar / Icicles hanging from sandstone cliffs along shoreline, Apostle Islands National Lakeshore, Lake Superior, Squaw Bay, Wisconsin, February 2014.

Thomas Lazar / Icicles hanging from sandstone archway, Apostle Islands National Lakeshore, Lake Superior, Squaw Bay, Wisconsin, January 2014.

Thomas Lazar / Frost crystals on the wall of a sea cave, Apostle Islands National Lakeshore, Lake Superior, Squaw Bay, Wisconsin, January 2014.

Thomas Lazar / Icicles hanging from sandstone ceiling in sea cave, Apostle Islands National Lakeshore, Lake Superior, Squaw Bay, Wisconsin, January 2014.

Thomas Lazar / Snow lining the shore of Lake Superior, Tettegouche State Park, Minnesota, December 2011.

Thomas Lazar / Snow lining the shore of Lake Superior, Tettegouche State Park, Minnesota, December 2011.

Thomas Lazar / Snow along the shore of Lake Superior, Tettegouche State Park, Minnesota, December 2011.

Thomas Lazar / Ice covered rocks on shoreline of Lake Superior, view to Ellingson Island. Split Rock Lighthouse State Park, Minnesota, December 2011.

Thomas Lazar / Rock cairns on icy Lake Superior shoreline, Split Rock lighthouse in distance. Split Rock Lighthouse State Park, Minnesota, December 2011.

Thomas Lazar / Ice covering old rusty chain & stone barrier, Lake Superior, Gooseberry Falls State Park, Minnesota, December.

Thomas Lazar / Ice covering old rusty chain & stone barrier, Lake Superior, Gooseberry Falls State Park, Minnesota, December.

David Pattyn / Kayaks on a beach at the edge of Lake Superior, Apostle Islands National Lakeshore, Bayfield peninsula, Wisconsin, USA, July.

David Pattyn / A beach at the edge of Lake Superior in the late afternoon. Apostle Islands National Lakeshore, Bayfield peninsula, Wisconsin, USA, July.

David Pattyn / A beach at the edge of Lake Superior in the late afternoon. Apostle Islands National Lakeshore, Bayfield peninsula, Wisconsin, USA, July.

David Pattyn / A beach at the edge of Lake Superior in the late afternoon. Apostle Islands National Lakeshore, Bayfield peninsula, Wisconsin, USA, July.

David Pattyn / Kayaks on a beach at the edge of Lake Superior, Apostle Islands National Lakeshore, Bayfield peninsula, Wisconsin, USA, July.

Kirkendall-Spring / Wisconsin Point Lighthouse on Lake Superior near the town of Superior. Wisconsin, USA, August 2011

Kirkendall-Spring / Wisconsin Point Lighthouse on Lake Superior near the town of Superior. Wisconsin, USA, August 2011

Kirkendall-Spring / Wisconsin Point Lighthouse on Lake Superior near the town of Superior. Wisconsin, USA, August 2011

Kirkendall-Spring / Wisconsin Point Lighthouse on Lake Superior near the town of Superior. Wisconsin, USA, August 2011

Kirkendall-Spring / Lightning storm during sunrise at Wisconsin Point Lighthouse on Lake Superior near the town of Superior. Wisconsin, USA, August 2011

Kirkendall-Spring / Twilight before dawn at Wisconsin Point Lighthouse on Lake Superior near the town of Superior. Wisconsin, USA, August 2011

Kirkendall-Spring / Sunrise at Wisconsin Point Lighthouse on Lake Superior near the town of Superior. Wisconsin, USA, August 2011

Kirkendall-Spring / Sunrise at Wisconsin Point Lighthouse on Lake Superior near the town of Superior. Wisconsin, USA, August 2011

Kirkendall-Spring / Sunrise at Wisconsin Point Lighthouse on Lake Superior near the town of Superior. Wisconsin, USA, August 2011

Kirkendall-Spring / Sunrise over Lake Superior at Wisconsin Point near the towm of Superior. Wisconsin, USA, August