The Southeastern corner of Missouri is known as the Bootheel, a name garnered from the shape the state takes between the Mississippi and St. Francis Rivers. Farmington is a quintessential Bootheel town, counting a skate park and golf courses among the available outdoor activities. The rural characteristics of the region once lent themselves to bootlegging and moonshine stills, and today, the dearth of major cities in the area is countered by a modest agricultural industry. Cape Girardeau and Sikeston are two of the more prominent cities, offering amenities and services to the surrounding area. Cabin accommodation and vacation homes such as the Crystal Lake Retreat can be found in the area, offering visitors a chance to experience the outdoors of Missouri. To literally get to the bottom of Missouri, Bonne Terre Mine Tours take visitors under the ground to see Billion Gallon Lake, one of the largest underground lakes in the world.