The Khyber Pass cuts through the Hindu Kush mountains (at an altitude of 3,500 feet) and connects Afghanistan and Pakistan. This rugged and historic route was photographed in October 2007 by NASA’s Terra spacecraft – looking from the Afghan side, eastwards into Pakistan. The Terra spacecraft took this thermal infrared image using its Japanese built ASTER (Advanced Spaceborne Thermal Emission and Reflection Radiometer) instrument.