Wendy Shattil and Bob Rozinski have published their 11th book, "Valley of the Dunes." The 152-page coffee-table book features 120 of the duo’s favorite photos taken while exploring Colorado’s Great Sand Dunes National Park over the past 25 years.

A selection of photos from the book can be viewed at www.dancingpelican.com. Autographed copies may be purchased from the web site for $19.95 each.