How many of you would jump at the chance to join rangers at Mount Rainier National Park on a three-day camping trek? And keep in mind, this offer comes with equipment, food, and rangers tossed in for free.

Floating face down in the Caribbean, with snorkel clenched in your mouth, lacks the structure, the regimentation, of observing the natural world in the way we’ve grown up to accept while walking through a forest, strolling through a meadow, or hiking up a mountain. Clouds of neon blue tangs drift by while black-and-yellow striped sergeant majors flit about, lacking the tangs’ regimented approach to life in the ocean.

The Smoky Mountains are home to more than 1,600 species of flowering plants. During each month of the year, some forb, tree or vine is blooming in Great Smoky Mountains National Park. During the spring, wildflowers explode during the brief window just prior to trees leafing out and shading the forest floor (from about mid-April through mid-May).

For decades winter visitation to Yellowstone National Park has been a lifesaver for the December-March economies of gateway towns such as West Yellowstone, Gardiner, and Cooke City in Montana, and Jackson and even Cody in Wyoming.