Mount Whitney, the highest peak in the contiguous United States, is on Inyo County's western border (with Tulare County). The Badwater Basin in Death Valley National Park, the lowest place in North America, is in eastern Inyo County. The difference between the two points is about . They are not visible from each other, but both can be observed from the Panamint Range on the west side of Death Valley, above the Panamint Valley. Thus, Inyo County has the greatest elevation difference among all of the counties and county-equivalents in the contiguous United States.