Hopefully the folks at Mount Rainier National Park aren't tempting fate this Saturday when they test their Geohazard Warning Siren at the Nisqually Entrance.

Completion of the Parks Highway in 1971 quite literally paved the way to Mount McKinley National Park, tripling its visitation within two years. The park now named Denali celebrates its 92nd birthday today, and the Parks Highway remains its only automobile-friendly link to the world.

Houses made of tuff blocks and axes made of Fibrolite may sound like a workshop in high-tech building materials or "green living," but you'll find examples of this very old technology in a park with great scenery and top-notch archeology. If you visit this area, keep your eyes open for squirrels with tufted ears.