Nominated as a World Heritage Site, Serpent Mound is the largest surviving example of a prehistoric effigy mound in the world. Stretching 1,348 feet over the ground, the beautifully preserved ancient earthwork depicts the form of an undulating serpent with an oval shape at the head. This earthen monument is anywhere from 1000-2000 years old, and the cultural identity of its American Indian architects remains wrapped in mystery, as does the exact ceremonial purpose behind its creation. The builders left no written records, so investigation and speculation continues on in both archaeological and less formal circles – attempting to explain the Serpent Mound’s origins. The Serpent continues to elicit humility, wonder, and awe – drawing tens of thousands of visitors a year from across the country and the world. The park is open daily from dawn to dusk with a $8.00 parking fee/vehicle and $4.00/Motorcycle. The museum is open daily April – October and weekends March, November and most of December. In addition to the Serpent, the park preserves three burial mounds of the Adena and Fort Ancient Cultures, and ancient village sites.