At the heart of the state park is the most famous and largest of the Adena Indian burial mounds. Constructed in successive stages from about 250 to 150 B.C., the mound is 69 ft. high with a diameter of 295 ft. A massive undertaking, the total effort required the movement of over 60,000 tons of earth. Artifacts and exhibits interpreting the lifestyle of the Adena people are displayed in the Delf Norona Museum, adjacent to the 2,000 year old mound. Other facilities in the museum include a gift shop and theater. Special theater and musical performances take place throughout the year.
