Stark Caverns is one of the better bad-weather or hot-afternoon breaks around Lake of the Ozarks. Guided tours lead through limestone passages with formations, small underground pools, and stories that connect the cave to Native American use, early settlers, and more recent local lore.
The cave is not a wilderness experience, and that is fine. It is accessible, structured, and family-friendly, making it a useful counterpoint to the lake's boating-and-resort rhythm. Bring a light layer; the underground temperature is steadier than the Missouri summer outside.