Last weekend my dog Sparky and I finally made it to the nation’s (and perhaps the world’s) largest concentration of dinosaur tracks located at the bottom of Picket Wire Canyon in southeast Colorado. I learned about Picket Wire Canyon while researching the very impressive and accessible dinosaur tracks near Clayton, New Mexico for my upcoming book Wandering in the Clear Light of New Mexico.
The Clayton and Picket Wire trackways are only 50 miles or so apart, as the crow flies, from each other, and both of them date back to around 100 million years ago or so during the Cretaceous geologic period. At that time much of the nation’s interior was covered by an inland sea. And dinosaur trackways are found in intermittent locations along what was the western edge of the sea all the way from Texas to Colorado.