Florida Caverns State Park in the Florida Panhandle near Marianna is the only Florida state park with public air-filled caves. Known for limestone caverns formed by eroded bedrock, it preserves a karst landscape of underground passages, rivers, and springs, with cave features such as stalagmites, stalactites, and flowstones. This limestone terrain also supports distinctive wildlife, including blind crayfish, bats, and salamanders, and the area shows evidence of Native American habitation before the park's establishment. Developed during the New Deal by the Civilian Conservation Corps, the park opened in 1942, and guided cave tours remain its centerpiece alongside other outdoor recreation.