The Trailside Museum of Natural History is located in the historic Army Theatre at Fort Robinson State Park, three miles west of Crawford, Nebraska on U.S. Route 20. The museum exhibits the fossils of two mammoths which killed each other when the area was in an ice age. Also in the museum there is a paleontological exhibition made by Mark Marcusson and Gregory Brownde. There are exhibits of animals that lived in Nebraska millions of years ago like the Daeodon or three-toed horse. Wikipedia