Tumbling Rock Cave in Alabama and protected by the SCCI (permitted required to enter the cave) has a 396 foot dome with a waterfall coming down the center of it.  Topless Dome was first climbed in 1978 by Don Davison and Cheryl Jones where they climbed straight up the dome and then rappelled down two side pits named Mushroom Forest and Horse Tooth Pit.  Allegedly, someone tried to climb back to the top in 1996 without a permit and got arrested right before they could top out and you can still see their rope up there (2nd episode).  No one has officially been to the top since 1978.

 

Rachel Saker loves vertical cave exploration and was exploring ceiling channels in the Hall of Great Mysteries until one of her discoveries, Disillusion Window, tied back into Topless.  She installed a via ferrata to go to the other side where the map said the Mushroom Forest and Horse Tooth Pit existed only to find out they were behind her.  I joined Rachel in episode 1 and lead aid climbed from her Disillusion window up to Horse Tooth Pit.  In Episode 2, Rachel leads from Horsetooth pit up through Mushroom Forest and gets us to the top where we found the original anchor from 44 years ago including the original note in a cricket chewed zip lock bag.  We then rappelled the entire dome making it the longest continuous rappel I have ever done.

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