Dr. Cassandra Rogers speaks about the history of the IDOT road project that spawned the development of the Samuel and Edna Hill Preservation Site Monday, August 2, 2021. Deb Carey (left) later spoke on how the group secured the land. The Middle Rock Conservation Partners dedicated the property, located just south of Grand Detour on Route 2, with a ceremony Monday. (Alex T. Paschal/apaschal@shawmedia.com)