Acoustic monitoring reveals that Great Sand Dunes National Park & Preserve has one of the quietest soundscapes in America. Remote areas of the park have sound levels so low that they barely register on the recording equipment.

Lava Beds National Monument, which celebrates its 83rd birthday November 21, is a strange looking place bursting with fascinating stories. As if the largest collection of lava tubes and caves in the coterminous states weren’t enough to make this park very special, it’s also where Captain Jack and his warrior band fought an amazing battle against an attacking force ten times its size during the Modoc War of the early 1870s.

One of the classic national park experiences is a Colorado River float trip through the Grand Canyon. As one group discovered, however, memorable moments on such trips aren't limited to running the rapids, and some surprising adventures can also occur when you tie up for the night.

Here's some good news as we near the end of 2008—you're part-owner of a spot described as "Paradise on earth, California style." Your on-site managers are working on a plan for the place, and you're welcome to give them your ideas.