Illinois Statutes Chapter 510. Animals § 77/10.24. Karst Area

§ 10.24. Karst Area. “Karst area” means an area with a land surface containing sinkholes, large springs, disrupted land drainage, and underground drainage systems associated with karstified carbonate bedrock and caves or a land surface without these features but containing a karstified carbonate bedrock unit generally overlain by less than 60 feet of unconsolidated materials.