Ice Caves No Longer Safe
The ice formations in Leelanau Township, north of the park, are no longer safe to visit. High winds have fractured the ice, moving it to the west. Huge cracks have formed in the cave arches, making them very unsafe and open water is now visible.
The extensive hardwood forests and forest edges create excellent habitat for many different species of fern and fern-like plants. They differ from flowering plants in that they produce dust-like spores that are the "seeds" by which ferns are propagated. The spores come from sporangia grouped under the fronds on ferns. Ferns drop millions to billions of spores during their lifetime, but few of these find a spot suitable for growth. Ferns are one of the oldest plant forms and have been around for more than 300 million years. The ferns ruled the plant kingdom during the Carboniferous Period (the age of ferns) as the dominant vegetation of that time period. Ferns and their allies can be divided into four classes and the Lakeshore has representatives of three of these classes including the equisetums or horsetails; the clubmosses; and 25 species of the true ferns.
Did You Know?
The Port Oneida Rural Historical District is a 3000 acre farming area preserved as it was in the early 1900's. This area was farmed for over 100 years and is now part of the Sleeping Bear Dunes National Lakeshore More...