The Hunas, Hala-Huna, Hara-Huna, Alchon, Alxon, or Walxon were a group of Xionite and/or Hephthalite tribes who, via the Khyber Pass, entered India at the end of the 5th or early 6th century and were defeated by the Indian Gupta Empire and the Indian king Yasodharman. In its farthest geographical extent in India, the Huna empire covered the region up to Malwa in central India. Their repeated invasions and war losses were the main reason for the decline of the Gupta Empire.