The term Range Where Prometheus Was Bound is referring to the Caucasus Mountains, an 8-letter word. The Caucasus Mountains are a mountain range located between the Black Sea and the Caspian Sea in Eastern Europe and Western Asia. It is considered to be one of the most culturally diverse regions in the world, with over 50 ethnic groups living in the area. In Greek mythology, Prometheus was bound to a rock in the Caucasus Mountains as punishment for stealing fire from the gods.