Carlsbad Caverns>Lechuguilla Cave

Lechuguilla Cave is, as of 2006, the fifth longest cave (120 miles (193 km)) known to exist in the world, and the deepest in the continental United States (489 metres (1,604 ft)), but it is most famous for its unusual geology, rare formations, and pristine condition.

It is located in Carlsbad Caverns National Park, New Mexico. Access to the cave is limited to approved scientific researchers, survey and exploration teams, and National Park Service management-related trips.

Lechuguilla Cave was known until 1986 as a small, fairly insignificant historic site in the park's backcountry.

The cave was visited infrequently after mining activities ceased. However, in the 1950s cavers heard wind roaring up from the rubble-choked floor of the cave. Although there was no obvious route, different people concluded that cave passages lay below the rubble. A group of Colorado cavers gained permission from the National Park Service and began digging in 1984. The breakthrough, into large walking passages, occurred on May 26, 1986.

Since 1986, explorers have mapped 122.4 miles (197 km) of passages and have pushed the depth of the cave to 1,604 feet (489 m), ranking Lechuguilla as the 5th longest cave in the world (4th longest in the United States) and the deepest limestone cave in the country.

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Jeskyne v mexiku

Death Valley

je údolí s nejníže položeným místem Kalifornie, USA, celé Ameriky i západní polokoule. Zdejší solné jezero Badwater' leží 86 metrů pod úrovní moře. 3. července 2001 zde byla naměřena nejvyšší teplota v USA; 57,1 °C. Průměrné roční srážky jsou 50 mm. Údolí leží jihozápadně od pohoří Sierra Nevada ve Velké sníženině a na severním okraji poušti Mohave. Tvoří velkou část Národního parku Death Valley. Rozkládá se severojižním směrem mezi horským pásmem Amargosa na východě a Panamint na západě a pohoří Sylvania a Owlshead formují jeho severní a jižní hranici. Má rozlohu téměř 8,000 km². Údolí je téměř 230 kilometrů dlouhé a mezi 8 a 25 kilometry široké.




zajímavosti:

Solné jezero Badwater (je nejnižším bodem na západní polokouli)

Devil's Golf Course





a nejzajímavější věc: Racetrack
http://www.youtube.com/watch?v=u1hoiHvOeGc

the mysterious forces that move rocks across the surface of Racetrack Playa in California's Death Valley.
Nobody has ever seen these rocks move, but they leave trails across the dried mud surface often hundreds of yards long. But on this cold winter morning, when the snowmelt covered the playa, we finally saw what nobody before had ever captured on film.