Time difference between Minneapolis, USA and London, UK is: 6:0 hours. London is 6:0 hours ahead of Minneapolis. When it is 9:00 am in Minneapolis, it is 3:00 pm in London.
One of the most well-traveled caves in Texas, you can choose between 5 different cave tours: the Aquifer Tour, Adventure Tour, Lantern Tour, Hidden Passages Tour, and Discovery Tour (most popular). 2) Longhorn Caverns (Burnet). Ed Schipul/Flickr. sarowen/Flickr.
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.