Definition of Death Valley from the Oxford Advanced Learner's Dictionary

 

Death Valley

 
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a desert covering part of the US states of California and Nevada. It is the lowest land in the western hemisphere, being 282 feet/86 metres below sea level, with very high temperatures (up to 50° Celsius). The desert was a source of the mineral borax in the late 19th century. In 1933, the area became the Death Valley National Monument.