In 1974, the three mounds were listed on the National Register of Historic Places: Mound 2 on May 3, and the others on July 15. All three received this designation because they were seen as important archaeological sites for understanding the Adena people that built them. The three mounds that have been destroyed were not listed, because archaeological sites that have been greatly disturbed are not eligible for inclusion on the Register.How to Apply the National Register Criteria for Evaluation, National Park Service, 1997, 21. Accessed 2010-07-15. The Register also includes one other archaeological site in Vinton County and one building in Zaleski: a mound near Londonderry known as the "Ratcliffe Mound," and the Masonic Lodge No. 472 respectively.
