Conventional price elasticity of demand is a simplistic and elementary formula that has mathematical and economic deficiencies when applied to price (rates) and demand (balances) of deposit products: 1  It does not recognize inverse relations between price and demand. 2  It assumes that rates and balances of deposits operate in a vacuum.
Mammoth Cave near Cave City, Kentucky, is the world's longest cave. More than 367 miles (591 km) of passages have been mapped. To get an idea of how long Mammoth Cave is, you should consider that the second longest cave in the world, Optimisticeskay Cave, in the Ukrainskaya region of the C.I.S. (former Soviet Union), is only 143 miles (230 km) long. Mammoth Cave is three times longer than its nearest competitor. Not only is the cave the longest in the world, but cave mappers believe the cave system will eventually prove to be 560 miles (900 km) long! Mammoth Cave was formed in Mississippian-age limestone rock. The cave is 379 feet (118 m) deep, and contains at least 5 levels of passages.
With 405 miles (652 km) of surveyed passageways Mammoth Cave is by far the world's longest known cave system, being nearly twice as long as the second-longest cave system, Mexico's Sac Actun underwater cave.