This monument has the world's richest fossil deposits dating back to almost 4 million years.
Hagerman Fossil Beds National Monument is known for having the most numerous Hagerman Horse fossils in North America. In all the world, the Hagerman Fossil Bed National Monument has the richest fossil deposits from the late Pliocene epoch period, which was about 3 to 4 million years ago.
There are fossil displays and replicas of animals discovered in the nearby hills and cliffs located in the visitor center. This area was also where scientists found the historic Hagerman Horse. Since the ground is rough and fossils are all around, there are a few trails to go hiking, but off-trail hiking is not permitted. This rule is in place to help preserve the fossils and their history. If you love seeing ancient fossils, stop by this national monument during your visit to Idaho.