Claim: The Hindu Kush is a valley.
Evidence: The Hindu Kush -LRB- -LSB- kʊʃ , _ kuːʃ -RSB- Pashto , Persian and -LSB- -RRB- , also known in Ancient Greek as the Caucasus Indicus or Paropamisadae , is an 800 km mountain range that stretches near the Afghan-Pakistan border , from central Afghanistan to northern Pakistan.