In the Wikipedia (s.v. Lahaul-Spiti) one reads: “The district of Lahaul-Spiti in the Indian state of Himachal Pradesh consists of the two formerly separate districts of Lahaul and Spiti.” What has this to do Philologia Tibetica? Well, Jäschke 1881 (s.vv. lho & gar zha) reports of Cunningham’s idea that Lahaul (or Lahoul as he has it) is from the Tibetan lHo-yul. He may have been right or wrong, but nonetheless, it is interesting.