Experience the wonder of Ruby Falls Christmas Underground on a magical journey to visit Santa! Travel a secret passage to the North Pole where Santa's Joystone miners are preparing for the holiday season. Discover a glittering ice cave, see Sugar Plum Fairy Village, the Northern Lights and find your own sparkling Joystone on this heart-warming adventure! Located in the caverns of Ruby Falls, Christmas Underground guests enjoy nighttime magic all day and is one of the only places in Chattanooga Christmas lights are on display throughout the day.