Key Cave National Wildlife Refuge is located in northwestern Alabama, along the Tennessee River. Key Cave is the ONLY habitat for the endangered blind cavefish which is considered one of the rarest vertebrates in the world! This colorless fish is found in underground pools within the cave. In addition, Key Cave is the home to two species of endangered crayfish. The refuge also provides protection for approximately 40,000 bats. Children can pretend to be caving, potholing, or spelunking, while playing in this cool cave.