“My whole life is a dark room. One big, dark room.” — Lydia Deetz The National Park Service manages over 4,700 caves with at least four that extend for more than 135 miles and are so complex that the casual visitor would be lost among the hundreds of passages to choose from. Check out some our favorite underground spaces. Image 1: mammothcavenps Image 2: carlsbadcavernsnps Image 3: windcavenps Image 4: jewelcavenps Image 5: oregoncavesnps #halloween #spookyseason #darkroom #cave #nationalparks