Thimble Rock

The geology of Thimble Rock and Unaweep Canyon are some of the oldest in Colorado, dating back to 1.7 billion years. The massive Biotite-Muscovite Granite Thimble Rock radiates the many different layers of rocks which give it its beautiful look. Scientist believe that the Earth was created about 4.6 billion years ago and that these rocks are approximately 2 billion years old....