YouTube channel National Park Diaries discusses how the Great Sand Dunes of Colorado got as tall as they are.

Nearly four miles of trails, a parking lot, restrooms and overlooks are planned for a 127-acre addition to a popular Lake Michigan dune park.

Death Valley National Park, situated along the California-Nevada border, east of the Sierra Nevada, is celebrating its 30th anniversary. President Bill Clinton, in 1994, signed the California Desert Protection Act, which established the Death Valley and Joshua Tree national parks.

For powersports fans, Glamis Imperial Sand Dunes is the mecca of off-roading in the Southwest. Located two and a half hours east of San Diego, this is the largest dune complex in California and one of the most sprawling in the country. This is also the second home of off-road utility specialist Polaris, which hosts a massive annual gathering for enthusiasts called Camp RZR.

PORTER COUNTY, Ind. — A time capsule from “The Greatest Generation” was found at the Indiana Dunes National Park. On the afternoon of Sept. 23, a contractor with…