Beneath the placid surface of some of the clearest lakes in America, lies a reality shaped ... These are the world’s largest freshwater sand dunes, which are a rare geological phenomenon born ...

Off the coast, the park also includes two undeveloped islands, North and South ... s famous dunes were sculpted by the advance and retreat of huge glaciers over the last two million years. It is the ...

and the monumental sand dunes from which it gets its name. In June, "GMA" set out in search of the most beautiful places in America. Viewers nominated their favorite places online, sending in ...

The park features the largest freshwater sand dunes in the world ... the park has an 1871 lighthouse at South Manitou Island. It's 100 feet tall and was active until 1958. 6.

Home to more freshwater ... America's Third Coast. While droves of vacationers flock to beaches overlooking the Pacific and the Atlantic oceans, inland residents enjoy Michigan's rolling sand ...

Along the southern Oregon coast, it is easy to explore a river that is filled with wonder and surprise; a river that reaches from freshwater ... temperate sand dunes in North America.” ...

The Bodélé depression is the World's single greatest source of atmospheric dust, with dust being blown across the Atlantic to South America, where it is believed to be helping to maintain the ...