On a sunny July day in 2013, 6-year-old Nathan disappeared during a hike on Mt. Baldy, a dune inside Indiana Dunes National Park. He had dropped through the dune and was trapped. As his friends ...

An urban oasis just 35 miles outside of Chicago, this park includes more than 15,000 acres of sensitive dune lands, bird-filled marshes, oak and maple forests, and remnants of once-vast prairies.