In 1905 in Tennessee, there was a young boy named Ben who loved to play in a local cave. One day the young boy was exploring his favorite cave when he found an opening he had never noticed before. He crawled through it but it was too dark to see inside so he began throwing balls of mud to get an idea of the depth of this new space. Instead of the sound of mud splatting against walls he heard splashing. It turns out he discovered the largest underground lake in the U.S. At this time, at least 13 acres have been discovered.
A similar underground lake is at the center of the society built by the inhabitants of the planet of Pa'Chot and has just been discovered by a handful of wayward Kevutians.