United States of America
Devils Well is a sinkhole cave near Akers in the U.S. state of Missouri, containing an underground lake that is the largest in the state. It is a part of the Ozark National Scenic Riverways and can be viewed by the public any day during daylight hours. The U.S. Park Service has set up a metal stairc
ase and a switch-activated light; however, it is recommended that visitors bring additional light sources.
Listen to the audio guide for Devils Well Free on WIP — starts by itself when you arrive, even with the screen off