Did You Know: The Blue Heron Overlook at Ruby Falls has a color-blind viewfinder! The Tennessee Department of Tourist Development outfitted this color-blind viewfinder with innovative EnChroma® lenses; designed to alleviate red-green colorblindness. Special lens technology enables those with color blindness to see a broader range of clear, vibrant colors. #themoreyouknow #visitchatt #rubyfallscave