Illinois Caverns is the second largest cave system in Illinois with 9.6 km of passages. Some passages can be 20 feet tall and 20 feet wide in spots. The cave is still living, and includes growing formations such as stalactites, stalagmites, rimstone dams, flowstone, and soda straws. According to Wikipedia, "Persons desiring to enter the cave need a permit; see official web site below for more information. A minimum of four people per party is needed for entrance into the cave. Each person needs to have a hardhat, boots, sturdy clothing, and three sources of light. At times some portions of the cave may be off-limits, these areas should be clearly marked."
Posted by Greg Heil on March 14, 2012
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