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ISS006-E-24783
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Spacecraft nadir point: 37.4° N, 113.9° W

Photo center point: 36.5° N, 118.0° W

Nadir to Photo Center: West

Spacecraft Altitude: 205 nautical miles (380km)
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Image Caption: Astronauts aboard the International Space Station looked obliquely down at the steep eastern flank of California's Sierra Nevada. Even from space the topography is impressive--the range drops nearly 11,000 feet from Mt. Whitney (under cloud, arrow), the highest mountain in the lower 48 states (14,494 ft), to the floor of Owens Valley (the elevation of the town of Lone Pine is 3,760 ft). The Sierra Nevada landscape is well known for deep, glacially scoured valleys, like Kern Canyon west of Mt. Whitney.

The California landscape changes east of the Sierra, marked by alternating steep desert mountain ranges and valleys. Many of the valleys contain dry lakebeds, remnants of deep lakes that filled the valleys 11,000 years ago, at the end of the last ice age. Owens Lake was a salty lake until 1913, when the Owens River was diverted into the Los Angeles Aqueduct, quickly draining the lake. Today, Owens Lake is a dried salt flat that contains some pooled water following rains. Solar evaporation ponds lie along the northern edge. The bright red color in the wet parts of the lakebed is from the red color of salt-loving bacteria (halobacteria).