Rockhounding: Pigeon Blood Agate

Explore the Morrison Formation south of I-70 for beautiful agates tumbling out of the sedimentary layers laid down 156 to 147 million years ago. The most famous agate in this area is the famed Pigeon Blood Agate: a clear to white agate with streaks and drops of brilliant red within. The Morrison Formation has been the most fertile source of dinosaur fossils in North America. It’s likely you could see some bones while out there.