Highest ACT State Score: Massachusetts. Massachusetts narrowly achieved the highest score in the country, with an average composite of 24.8, just above Connecticut and New Hampshire, who tied for an average of 24.5.
Donaldson/Bronson Cave (also known as Shawnee Cave) is located entirely within Spring Mill State Park. The cave is the downstream section of the Shawnee drainage system (Lower Twin and Upper Twin caves make up the remaining sections). For the entire length of the cave, you are in water.
Travertine flowstone & dripstone (Crystal Onyx Cave, near Cave City, Kentucky, USA) 1 Travertine flowstone and dripstone in a Tertiary-Quaternary cave in Kentucky, USA. Crystal Onyx Cave is a relatively small, speleothem-rich cave on the eastern flank of Prewitts Knob, southwest of the town of Cave City, Kentucky, USA. The walls of the cave are limestones and dolostones of the Ste. Genevieve Limestone (upper Middle Mississippian).