The Grand Canyon
MILLIONS OF YEARS IN THE MAKING
The Grand Canyon tells one of the world’s greatest geologic stories. Its distinctive features allow researchers to piece together the history of this unique location, one of America’s treasures and a UNESCO World Heritage Site. Thinking of the geologic record as a book is helpful to understand each page of Earth’s history. The beginning of the story starts at the bottom of the canyon and moves forward in time as you get closer to the rim.