The Blanchard Spring Caverns were an unexpected stop in Arkansas. While driving through the Ozarks, a huge storm hit us and we decided to pull into the Blanchard Springs area. A tour just happen to be starting when we arrived, so we took it. Definitely worth it. The rock formations in this place were unbelievable. They said these caverns are ranked in the top three of the nation along with Sonora in TX and Carlsbad in NM.