A series of Hopewell mounds in Ohio has been declared a UNESCO World ... it was attributed to the Adena, a Native American culture that predated the Hopewell. Later, it was credited to the Fort ...

Notwithstanding, how the Serpent Mound came to be in Ohio (North ... than the Fort, the Adena culture is recognized for its distinctive architecture, including cone-shaped mounds.

A doctor is now being investigated for his possible role in the deaths of three patients. A former Adena Health System doctor ...