We are now going to explore Mammoth Cave National Park in Kentucky. This is a gargantuan (largest) and longest amount of caves to explore in the United States. There is well over 400 miles of explored caves and passages and there is much more to go they say. They have many many day and night time tours down into the cave system and most are guided and narrated. It is many hundreds of steps down into the cave system and the amazing thing is the temperature stays constant and relatively cool. Its hard to photograph the caves and as you approach the cave system out in the forest you come across a very striking and erie cold air. This cold chill in the air is felt long before you see the cave entrance. Here they have stairs going down hundreds of feet into the cave leading you even deeper.