• Indianhead Point stands tall along the Pictured Rocks. Photo copyright Craig Blacklock

    Pictured Rocks

    National Lakeshore Michigan

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  • Grand Sable Dunes temporary closure to all public entry for visitor safety

    Grand Sable Dunes are rapidly eroding into Sable Creek and Lake Superior. The area from the Ghost Forest Trail north to Lake Superior then along the shoreline to the west side of Sable Creek is temporarily closed. Follow closure signs for your safety. More »

Amphibians and Reptiles

A garter snake meanders through long grass.

Garter Snake

NPS photo by Gregg Bruff

As would be expected at this northern latitude, herpetofauna (amphibians and reptiles) are not numerous. Only 5 reptile and 12 amphibian species are confirmed to exist within Pictured Rocks National Lakeshore.

Encounters with snakes are rare, and a hiker might be lucky enough to get only a quick glimpse of an eastern garter or northern red-bellied snake before it slips off the trail into dense vegetation. There are no poisonous snakes in the lakeshore.

Painted turtles may be visible sunning themselves on logs in inland lakes. Keep an eye out for small snapping turtles crossing Sand Point Road in the summer after they hatch from their sand nests. Snapping turtles usually inhabit shallow inland ponds and streams, but on rare occasion one will venture into Lake Superior.

Amphibians are among the lakeshore's more secretive residents. Frogs like northern spring peeper, northern green, and wood frog are heard more than seen, especially during the spring mating season. Gray treefrogs are fairly common but difficult to detect as their superb camouflage hides them in the tall trees where they live. Only their surprisingly loud trills alert visitors to their presence. The park's cool, moist woodlands provide perfect habitat and hiding places for salamanders and newts. Pick up logs and branches carefully when collecting firewood as there may be a salamander underneath.

Amphibians worldwide have undergone a decline in the past few decades due to habitat loss and pollutants. Because they are highly sensitive to changing environmental conditions, amphibians are often good indicators of the health of an ecosystem. The park monitors the presence of amphibians each year; however, locating salamanders, frogs, and toads in the lakeshore's remote forests and wetlands can be quite a challenge. Park biologists and other researchers use special sound recording equipment to determine the presence of various amphibian species by their distinct vocalizations.

 

Did You Know?

Dune grass thrives on the Grand Sable Dunes near Grand Marais, Michigan, in Pictured Rocks National Lakeshore.

On October 6, 1972, ceremonies in Munising marked the establishment of Pictured Rocks National Lakeshore, America's first national lakeshore. To symbolically link the park's two gateway communities of Munising and Grand Marais, water was poured from two glass containers into a third. More...