If you've never been inside Carlsbad Caverns, let me tell you, it is HUGE! I mad this shot on our decent into the cave through the Natural Entrance. You descend 750 feet below ground through the natural entrance and most of it is through very large 'rooms'. The views inside are a wonder to see. With the green light seeping in through the cave in back, it feels like you are venturning into another world. Plus there was a little fog in the air which I can only guess is a result of the temperature inversion caused where the outside and inside air meet. Really hard to describe unless you've been there to see it first hand.