The park administrative offices in Eads are fully accessible and have a designated accessible parking space. The America the Beautiful National Parks and Federal Recreational Lands Access Pass is available to U.S. citizens or permanent residents of any age that have a permanent disability. This pass is not available at Sand Creek Massacre NHS becasue the park does not charge an entrance fee. Accessibility - Sand Creek Massacre National Historic Site (U.S. National Park Service) All walking trails at the park are sand-based with a ¼-inch crusher fine walking surface. They are compatible for wheelchair use; however, rain/snow and/or patches of soft sand may impede wheelchair use.