The origin of the name Bitlis is not known. A popular folk etymology explanation, without historical basis, is that it is derived from "Lis/Batlis", the name of a general said to have built Bitlis castle by the order of Alexander the Great. To Armenians, it was known as Balalesa or Baghaghesh, and later Baghesh. According to one popular Armenian folk story, on a cold, wintry day a donkey left its stable and wandered down the valley below. The donkey died of the freezing temperatures and was only discovered in the spring, once the ice had melted; thus, it received the name "Pagh Esh", or "Cold Donkey."